Find the circumference and the area of a circle with radius 5 km.Write your answers in terms of 1, and be sure to include the correct units in your answers.

Question

asked Nov 23, 2023 19.4k views

1 Answer

Selfawaresoup · Answer 1 · 2023-11-27T10:21:16+0000

Given:

Radius = 5 km.

circumference of the circle

$\text{circumference =}2\pi r$

Substitute r=5 in the formula, we get

$\text{circumference =}2\pi*5$

$\text{circumference =}10\pi km$

The area of the circle is

$\text{Area =}\pi r^2$

Substitute r=5 in the formula, we get

$\text{Area =}\pi(5)^2$

$\text{Area =}25\pi km^2$

Hence the answers are

$\text{circumference =}10\pi km$

$\text{Area =}25\pi km^2$