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(Part A)Find the area of the circle with a radius of 4m.

(Part B)Find the circumference of the circle with a radius of 4 m.

(Part A)Find the area of the circle with a radius of 4m. (Part B)Find the circumference-example-1

2 Answers

4 votes

Answer:

Part A: 16π m²

Part B: 8π m

Explanation:

Part A


A=\pi r^2 where r is the radius

Plug in 4 as the radius


A=\pi (4)^2\\A=\pi(16)\\A=16\pi

Therefore, the area of the circle is 16π m².

Part B


C=2\pi r where r is the radius

Plug in 4 as the radius


C=2\pi (4)\\C=8\pi

Therefore, the circumference of the circle is 8π m.

I hope this helps!

User Westandy
by
8.2k points
6 votes

Explanation:

Part A)

Area of Circle =


\pi {r}^(2) \\ = \pi( {4}^(2) ) \\ = 16\pi {m}^(2)

Part B)

Circumference of Circle =


2\pi \: r \\ = 2\pi(4) \\ = 8\pi \: m

User THK
by
8.3k points

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