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3 years ago

how to find the area of each circle. use a calculator value of pi. round the answer to the nearest tenth

Mathematics

2 answers:

tankabanditka [31]3 years ago

8 0

Answer:

A = 201.0 mi^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

We know that r = 8

A = (3.14) *8^2

A = 3.14 * 64

A = 200.96 mi ^2

Rounding to the nearest tenth

A = 201.0 mi^2

ziro4ka [17]3 years ago

7 0

Answer:

201.1 mi

Step-by-step explanation:

1. Use the formula for area of a circle which is A=pi r^2

2. Plug in 8 for r (representing the radius):

8^2= 64 x pi = 201.1

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3 years ago

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3 years ago

Read 2 more answers

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Bad White [126]

Answer:

Step-by-step explanation:

Total peanuts = 5/6pounds

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3 years ago

Write the equation for the line whose slope is -1/4 and goes through the point (-2,6)

Kryger [21]

Answer:

$y = -\frac{1}{4} + \frac{11}{2}$

Step-by-step explanation:

use y = mx + b where:

y = y-coordinate = 6

m = slope = -1/4

x = x-coordinate = -2

b = y-intercept = what we're solving for to complete the equation

plug the values into the equation

$6 = -\frac{1}{4}(-2) + b$ multiply $-\frac{1}{4}$ and 2

$6 = \frac{1}{2} + b$ subtract $\frac{1}{2}$ from both sides

$b = \frac{11}{2}$

now we plug m and b into the equation and leave x and y as variables to get the final equation:

$y = -\frac{1}{4} + \frac{11}{2}$

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3 years ago