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

(1) 28 cm

(2) 10.5 cm

(3) 17.5 cm

(1) We know that

area of circle = πr²

Here given that radius of the circle is 28cm

= 784π sq cm

= 2464 sq cm

(2) Here the radius of the circle = 10.5 cm

= 110.25π sq cm

= 346.5 sq cm

(3) Here the radius of the circle is 17.5cm

= 306.25π sq cm

= 961.625 sq cm