Find the circumference of the circle with the equation (x + 2)+ (y - 3)2 = 9. Write the circumference in terms of pi.

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Ответ:

delawdermia27

12.04.2020

Mathematics

6.28 feet

Step-by-step explanation:

1.) Find the radius.

The area is given, and the formula for area of a circle is A = $\pi r^{2}$ Let's substitute.

3.14 = $\pi r^{2}$

Divide by pi on both sides

1 = $r^{2}$

Find the square root of r

1 = r

The radius is 1.

2.) Find the circumference.

C = $2\pi r$

C = $2\pi (1)$

Multiply 2 and 1

C = $2\pi$

C ≈ 6.28

The circumference is approximately 6.28 feet.

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Find the circumference of the circle with the equation (x + 2)+ (y - 3)2 = 9. Write the circumference in terms of pi.​