Question

Find the area of.a circle.whose radius is (1) 21cm

Answer 1

Area of circle=
$\pi {r}^{2}$
Area of circle=22/7×21×21
=22×3×21 =1,386 sq cm

Answer 2

Hey sup!

As per the question,

Radius (r)=21cm.
Area = πr^2.
=22/7 × 21 × 21.
=22×3×21.
=1386 cm^2.

Hope it helps.