Question

if the circumference of circlular sheet is 308 cm find its area

Answer 1

Circumference of circle = 2πr

308 cm = 2πr

308 / 2 cm= πr

154 cm = 22r / 7 [ π = 22 / 7 ]

154 × 7 / 22 cm = r

7 × 7 cm = r

49 cm = r or radius




Then,

Area of circular sheet = πr²

Area of circular sheet = 22 / 7 × 49 × 49 cm²

Area of circular sheet = 22 × 7 × 49 cm²

Area of circular sheet = 7546 cm²



$\:$

Answer 2

area of circle =3. 14×49^2
=7539. 14 cm^2


hope it helps you