the diameter of a circle is 4 cm. find it's area in terms of pi?!​

Answers

Answer 1

Step-by-step explanation:

Radius of the circle = Diameter / 2 = 2cm.

Area = pi * (Radius)² = 4pi cm².

Answer 2

Answer:

4[tex]\pi[/tex]

Step-by-step explanation:

Radius is always half of the diameter.

So, 4/2=2

Now that we know the radius, we find the are.

The equation for area is [tex]\pi r^2[/tex]. When you insert everything, you get....

[tex]\pi[/tex][tex]*[/tex][tex]2^{2}[/tex]  

When you put it all together, we get... 4[tex]\pi[/tex]

Hope this helped :)


Related Questions

The Alvarado family went out for supper last week. The meal cost $65.92.
.
The sales tax is 7% of the meal.
The tip was 20% of the meal.
There are 4 people in the family.
What was the cost per person for the meal, including sales tax and tip?
A. $84.64
B. $21.16
C. $14.11
D. $16.48

Answers

The correct answer is $21.16

Explanation:

The first step to solve this mathematical problem and find the correct answer is to calculate the cost of the sales tax and the tip by using the cost of the meal. The process is shown below:

1. Calculate the sales tax (7%)

7% of $65.92

65.92 / 100 = 0.6592

0.6592 x 7 = 4.6144 (Money on the sales tax)

2. Now, add the initial cost of the meal to the taxes and calculate the tip (20%)

$65.92 + $4.6144 = $70.5344

20% of $70.5344

70.5344 / 100 = 0.705344

0.705344 x 20 = 14.10688 (Money on tip)

Now, let's add the three values to calculate the total cost of the meal

$65.92 + $4.6144 + $14.10688 = $84.64128

Finally, divide the price into 4 because 4 people will pay

$84.64128 / 4 = $21.16032 which can be simplified as $21.16

Sarah travels 33 miles per hour. How long does it take her to travel 198
miles? Your answer should be in hours, rounded to the nearest tenth.
label required

Answers

Answer:

its will take Sarah 6 hours to travel 198 miles if she continues to go 33 miles per hour

Step-by-step explanation:

33 per hour

198/33 = 6

please help...........

Answers

Answer:

200.96 ft^2

Step-by-step explanation:

A= πr^2. So the radius is 8, because it's half the diameter. That means A=64π. Then you multiply that to get 200.96, given that pi is estimated to 3.14.

Karin owns a restaurant and has a monthly budget of x dollars. Every month $5,496 is
spent on supplies. One-third of the remaining budget is spent on employee salaries.
Which function can be used to find the amount in dollars spent on employee salaries?

Answers

Answer:

f(x)= x/3 - 5496

Step-by-step explanation:

2 QUESTIONS 20 POINTS
Which of the following represents a temperature of 0°C?
A.
room temperature of water
B.
freezing temperature of water
C.
average temperature of ocean water
D.
boiling point of water


QUESTION 2
The table below shows the cake sales at Swanson's Bakery in the last hour.



Type of Cake Number Sold
Marble Cake 7
Coffee Cake 3
Carrot Cake 5
Cheesecake 12
Red Velvet Cake 8
Fruitcake 1


Which of these represents the ratio of the red velvet cakes sold to the total cakes sold?


3 to 2
2 to 9
2:3
9:2

Answers

Question 1
Answer is C. Freezing temperatures of water
C is the best answer

does anyone know the answer to 4x+6x=9x

Answers

are you sure you wrote that the right way?
answer is x = 0
explanation shown in photo

Which conflict reaction involves a choice of whether or not to do something when part of the situation is attractive but the other is not? approach avoidance multiple approach approach approach avoidance avoidance

Answers

Answer:

Approach-avoidance

Step-by-step explanation:

The term that is being described in this question is known as Approach-avoidance. This occurs in many real-life scenarios where individuals really want something until they are met with the negative side of that goal and ultimately turn away because of those negative traits. One example that is widely used for this term is marriage. Marriage in itself is a very positive goal that many individuals strive for, but ultimately push away from it when they begin to see the negative aspects of it, even if the positive values overshadow the negative ones.

Kimberly is deciding between two cell phone plans. The first plan has a $50 sign-up
fee and costs $20 per month. The second plan has a $30 sign-up fee and costs $25 per
month. After how many months will the costs be the same for the two phone plans?

Answers

Answer:

2month and 2 weeks

Step-by-step explanation:

We are told that the first plan has a $50 sign-up

fee and costs $20 per month.

let the number of months be x, and the total cost be y

y=20x+50---------1

The second plan has a $30 sign-up fee and costs $25 per

let the number of months be x, and the total cost be y

y=30x+25---------2

Equate the two equations we have

20x+50=30x+25

solve for x, collect like terms

50-25=30x-20x

25=10x

divide both sides by 10

x= 25/10

x=2.5 months

x= 2month and 2 weeks

Antonio buys a bag of food for his cat, Tiger. The bag weighs 3.2 pounds and costs $3.84. How much does Tiger's cat food cost per pound?

Answers

Answer:

$1.20 per pound

Step-by-step explanation:

Take the Cost, or $3.84 divided by the weight, or 3.2 pounds, and you'll get 1.2, or $1.20 per pound.

Calculate the area and perimeter

Answers

Answer:

75cm

Step-by-step explanation:

(5*3)+(5*5)+(7*5)

PLEASE HELP!!!!!!!!! 32 POINTS.

Answers

The answer is 96 for this

The local sandwich shop manager is slicing deli meat for lunch. He needs to slice the same amount of pepperoni as
salami. He needs three times as many pounds of ham as he does pepperoni. He needs twice as much turkey as he
needs ham. If the manager slices 44 pounds of deli meat, complete the table to determine the number of pounds of
pepperoni and the number of pounds of turkey does he slices,

Pls hurry

Answers

Answer: i believe it would be option a.

Step-by-step explanation:

Which expression is equivalent to -6(8 + 12)

a. (-6) • 8 + 12

b. (-6) • 8 + (-6) • 12

c. -68 + 612

d. (-6) + 8 • (-6) + 12

Answers

Answer:

b

Step-by-step explanation:

-3^2 + -2^3 + 6
answer plzzz!!!

Answers

Answer:

-11

Step-by-step explanation:

Answer:

19

Step-by-step explanation:

[tex](-3)^2+(-2)^3+6[/tex]

[tex]= 9 + 4 + 6[/tex]

[tex]= 19[/tex]

How many solutions does 8p + 1 = 4p +2 have?

Answers

Step-by-step explanation:

8p + 1 = 4p + 2

8p - 4p = 2 - 1

4p=1

4p/4p=1/4p

p=0.25

The equation 8p + 1 = 4p + 2 have one solution which is p = 0.25.

What is an Equation?

Equations are mathematical statements where we write two expressions which is equal to each other. There will be a left hand side and a right hand side on either sides of an equation.

The main classes of equations in algebra are linear equations and polynomial equations. On these include quadratic equations, cubic equations, differential equations and so on.

We have the expressions 8p + 1 and 4p + 1 equal to each other.

8p + 1 = 4p + 2

Subtracting the term 4p on both sides, we get,

8p + 1 - 4p = 4p + 2 - 4p

4p + 1 = 2

Subtracting both sides with 1,we get,

4p + 1 - 1 = 2 - 1

4p = 1

Dividing both sides by 4, we get,

p = 1/4

p = 0.25

Hence there is one solution to the equation 8p + 1 = 4p + 2 which is p = 0.25.

To learn more about Equations, click:

https://brainly.com/question/29657992

#SPJ2

Please help me with this page it’s hard

Answers

Answer:

I can't really answer but you could download photomath it basically answers these questions by itself

Step-by-step explanation:

hope this is enough

Q4a) yes, the equation is a linear function as it is a straight line; it has a slope of 2 and a y intercept of (0,2).
b) no, the equation isn't a linear function as it takes the form of a parabola (x^2-bx).

Q5) y=x+6, y= x^2+6 and y=2x+6 go through the point of (0,6). This is because, if you substitute 0 for x in all the three equations, y is always equal to 6.

Q6) the line is a linear function because it is a straight line that has a slope and a y intercept. To figure out the equation of the line, you have two points, (-2,0) and (0,3). To no the gradient, you do 3-0 divided by 0+2, which is 3/2. Then, you choose on random point and substitute it in y=mx+b

3= 3/2*0+b

So you get 3=b

So, the equation of the line is y= 3/2x+3

what is the size of the matrix resulting from

Answers

Answer:

1×3 or 3×3 I think...........

Answer:

1 x 3

Step-by-step explanation:

Which of the following is true about the graph shown below?
A. The graph is not a function because it does not
start at (0,0).
B. The graph is a function because it passes the
vertical line test.
C. It is not a function because it is not linear.
D. It is a function because it has a constant rate of
change.

Answers

Answer:

B

Step-by-step explanation

A - the graph is a function and whether or not the graph starts at (0,0) does not say if it is a function

B - the graph is a function and the vertical line test does determine if a graph is a function

C the graph is a function and non-linear graphes can be functions

D - the graph is a function but the graph does not have a constant rate of change and a function can have a variable rate of change  

Dilate the figure by a scale factor of 3.5. What are the verticals of the image?

Answers

Answer:

The vertices of the image are

J' (3.5, 14), K' (21, 14),

L' (21, 3.5), M' (3.5, 3.5) ⇒ D

Step-by-step explanation:

If the point (x, y) dilated by scale factor k and center the origin, then its image is the point (kx, ky)

In rectangle JKLM

J = (1, 4), k = (6, 4), L = (6, 1) and M = (1, 1)

∵ The rectangle JKLM is dilated by a scale factor of 3.5

→ By using the rule above multiply each coordinate by 3.5

∴ J' = (1 × 3.5, 4 × 3.5) = (3.5, 14)

∴ K' = (6 × 3.5, 4 × 3.5) = (21, 14)

∴ L' = (6 × 3.5, 1 × 3.5) = (21, 3.5)

∴ M' = (1 × 3.5, 1 × 3.5) = (3.5, 3.5)

The vertices of the image are

J' (3.5, 14), K' (21, 14),

L' (21, 3.5), M' (3.5, 3.5)

How is the graph of y = 4x^2 - 4 different from the graph of y = 4x^2?
A.It is shifted 4 unit(s) left.
B.It is shifted 4 unit(s) right.
C.It is shifted 4 unit(s) down.
D.It is shifted 4 unit(s) up.

Answers

Answer:

Answer -- C. It is shifted 4 units down

Step-by-step explanation:

I graphed it :)

What is the perimeter of this polygon?
a
28 units
26 units
22 units

24 units

Answers

Fhdhdsjskskdkggkfkskdkfgkf

What is the area of ▴PQR Below

Answers

The answer C. The slope is negative! See how if you start from the left top side the line is slanting down? That means the the slope is decreasing onwards to infinity. If it was positive (it’s not!) it would start from the right bottom side and go upwards.

hope this is helpful!

Can someone help I’ll give you the brainlyst

Answers

Answer:

Step-by-step explanation:

the rate per window is the slope or the uniform amount that the y values increase by

we can see that company A increases 25$ per window

we can see company B increases 40$ per window

and company C increases 35$ per window

so company B charges more per window because it has the greatest slope

What is 1.92 divided by 3?
Explain.

Answers

Answer:

0.64.

Step-by-step explanation:

In order to solve this seemingly simple problem, you need to remove the decimal from 1.92 and act like it isn't there. Once you've divided 192 by 3 to get 64, you can put the decimal place back where it belongs and get your final answer of 0.64.

The lengths of three sides of a triangle are (x + 6) inches, (2x - 2) inches, and (2x+ 6) inches.
The perimeter of the triangle is 85 inches. What is the length of the shortest side of the triangle?

Answers

Answer:

21 inches answer F

Step-by-step explanation:

x+6+2x-2+2x+6=85

5x+10=85

5x=75

x=15

shortest is x+6

15+6

21.

Hope this helps plz hit the crown :D

What is the image of (-8,-5) after a dilation by a scale factor of 4 centered at the origin

Answers

It’s (-32, -20)

All you have to do is use the number 4 from the word problem, and then multiply that by both -8 and -5 separately

After his initial reaction, Mr. Evil has some time to think. He calls you on the phone with a new plan. “OK,” he says. “I don’t need to be able to tunnel to the bank today, but I need to be able to do it within the next 30 years. I have access to a house that is much closer. I need to know if it will be close enough.” What do you need to know in order to answer him? Under what conditions would this new property be close enough to the bank????????? HELPPPPPPPPPPPPPPPPP

Answers

Answer:

um.

Step-by-step explanation:

So he is asking, abstractly, from lack of context, if his house is close enough to the bank?

This makes little sense, abstractly. I mean, does he live in a post-apocalyptic Mad Max setting where he needs explosives and men or perhaps a frozen-over world where he needs large steam-powered engines to drill through the permafrost? It makes little substantiated sense.

So you need to know how much money he has, his charisma level, and the setting of the plot.

If the property is next to the bank, then it would be, by far, close enough to the bank.

16. Which ocean is the smallest of the five oceans?

Indian Ocean

Arctic Ocean

Southern Ocean

Atlantic Ocean

Answers

Answer.....:

Arctic Ocean

Arctic Ocean :-) sorry if wrong :(

plz help me on this its timed

Answers

Answer:

-2.72

Step-by-step explanation:

You need to dived -8.16 by 3t to get the answer

Solve the equation for the specified variable.
T= BA-9, for B
What does b=

Answers

9514 1404 393

Answer:

  [tex]B=\dfrac{T+9}{A}[/tex]

Step-by-step explanation:

Add 9 to both sides of the equation, and divide by the coefficient of B.

  T = BA -9

  T +9 = BA

  (T +9)/A = B

We can rewrite that with B on the left:

  B = (T +9)/A

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