#### Question

Radii of the circles are given below, find their areas.

(1) 28 cm

(2) 10.5 cm

(3) 17.5 cm

#### Solution

(1) 28 cm

Ar = πr² = π x (28)²

= `22/7 xx 28 xx 28`

= 2464 sq cm

(2) 10.5 cm

Ar = πr² = π x (10.5)²

= `22/7 xx 10.5 xx 10.5`

= 346.5 sq cm

(3) 17.5 cm

Ar = πr² = π x (17.5)²

= `22/7 xx 17.5 xx 17.5`

= 962.5 sq cm

Is there an error in this question or solution?

Solution Radii of the Circles Are Given Below, Find Their Areas. Concept: Perimeter and Area of a Circle.