Question

if the circumference of a circle measures 3π cm, what is the area of the circle in terms of π? A) 3 4 π cm² b) 3 2 π cm² c) 9 4 π cm² d) 9 2 π cm²

Answer 1

Correct option is C

Explanation:

The formula for calculating the circumference is C=2πr, where r is the radius.

so;

3π =2πr

r = 3π / 2π

r = 3/2 cm

The area of a circle is pi times the radius squared (A = π r²).

A = π (3/2 cm)²

A = (9/4) π cm²