AskQ logo

STUCK ON HOMEWORK?

ASK FOR HELP FROM OUR KIASUPARENTS.COM COMMUNITY!

Question

Answer

(a)If radius of the circle is r cm,

Length = 20 + 2r 

Breadth = 14 + 2r

Given their ratio is 13 : 10

13( 14 + 2r) = 10 ( 20 + 2r)

182 + 26r = 200 + 20r

6r = 18

r = 3

Perimeter of the figure = 4 * 3/4 * 2 * 3.14 * 3 + 2 (14 + 20)

= 56.52 + 68

=124.52 cm

(b) Area of the figure = 4 * 3/4 * 3.14 * 3² + (20 * 26)

= 84.78 + 520

= 604.78 cm²

0 Replies 1 Like