Question

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

Answer 1

Step-by-step explanation:

Part A)

Area of Circle =

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

Part B)

Circumference of Circle =

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

Answer 2

Answer:

Part A: 16π m²

Part B: 8π m

Step-by-step 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!