Question

the circumference of a circle is 20 π centimeters what is the area in square centimeters express your answer in terms of Pi​

Answer 1

A = 100π cm²

Explanation:

the area (A) of a circle is calculated as

A = πr² ( r is the radius )

we require to find r

the circumference (C) of a circle is calculated as

C = 2πr

given

C = 20π , then

2πr = 20π ( divide both sides by 2π )

r = 10

Then

A = π × 10² = 100π cm²