Find the area of a circle that has a 12 inch radius.

Answers

Answer 1

Answer: The area is 452.39Hint : If you know the radius of a circle , you can use it to find the area of what that circle . Just plug that value into the formula for the area of a circle and solve .I hope that's help !

Answer 2

Answer: So,

We know the formula for the area of a circle is:

$A=\pi r^2$

All we have to do is to substitute the given value and simplify.

$A=\pi (12)^2$

$A=\pi (144)\ or\ 144\pi$

In numerical form, it would be 452.389342 or approximately 452.4 in.²

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Answers

The item with the better price is Tec-U-COMP.

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Eric has 6 1/6 feet tall and his brother is 5 3/4 feet tall. Eric is how many feet taller than his brother?

Answers

6 1/6- 5 3/4=x

1) convert the fractions to a common multiple like 12, but what the denominator is multiplied by so is the numerator

6 2/12- 5 9/12

2) subtract the 6 and 5 than subtract numerators

5/12 is the answer

5/12 you have to subtract

Ethan wants to predict who will be selected as the eighth-grade class president. Which of the following groups should Ethan survey to make his prediction?A One hundred random students from the entire school
B One hundred random students from the eighth grade
C The first 100 students from an alphabetical list of eighth graders
D The first 100 students from an alphabetical list of the entire school

Answers

the answer is B One hundred random students from the eighth grade

Answer:

B is the right answer

Step-by-step explanation:

A cylinder has a radius of 10 cm and a height of 8 cm.What is the volume of the cylinder?

Answers

Volume of a cylinder = πr² h
V = volume
R = radius
H = height
² = squared

radius = 10 cm
Height = 8 cm

V = π10²×8
V ≈ 3.14 * 100*8
V ≈ 2512

Volume of cylinder = πr²h

r = 10cm, h = 8 cm.

Volume = π*10²*8 = π*100*8 = 800π

Volume = 800π cm³ or ≈ 800*3.142 ≈ 2513.6

Volume ≈ 2513.6 cm³

Joe has been given a treasure map on which he must plot three points. There is a portion of the treasure at each point. Point A is at (-4,0), Point B is at (-4,5), and Point C is at (4,2). If Joe has already found his at Point A, how far must he walk to get to Point B? I think it has something to do with a coordinate plane, I'm not sure.

Answers

yo has to find distance from A to B
since the x coordinate didn't move ( from -4 to -4) we find the distance the y moved
from 0 to 5 is 5 units

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The director of marketing at a large company wants to determine if the amount of money spent on internet marketing is a good predictor of company profit. She fits a least-squares regression line to 20 months of data and computes the following regression line:Profit = 372.6 + 17.2(advertising dollars)

What is the value of the residual for advertising dollars spent equal to $1,020 and Profit equal to $17,500? Round to the nearest integer.

Answers

Given:
Profit = 372.60 + 17.2(advertising dollars)
Advertising dollars = 1,020
profit = 17,500

17,500 + residual value = 372.60 + 17.2(1,020)
17,500 + residual value = 372.60 + 17,544
17,500 + residual value = 17,916.60
residual value = 17,916.60 - 17,500
residual value = 416.60

residual value is 416.60 or 417 rounded off to the nearest integer

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