Question

A wire in the shape of rectangle of length18 cm and width 15 cmis reshaped and bent in the form of a circle.Find the radius and area of the circle of

Answer 1

Perimeter of rectangle= circumference of circle

Perimeter of rectangle=2(l+b) =2×33

=66 cm

66. cm =circumference of circle

66= 2πr

r=66×7/22×2

r=21cm

area of circle =πr^2

22×21×21/7

=1386cm ^2