Question

What is the circumference of a circle with area 24cm. Give your answer to three significant figures.

Answer 1

Circumference = 17.4 cm

Explanation:

A = π
`r^(2)`

24 = π
`r^(2)`

`r^(2)` = 24/π

r =
`\sqrt{(24)/(\pi ) }` = 2.7639...

d = 5.5279...

C = πd

= π5.5279...

= 17.4 cm