Question

The radius of a peice of wire circular in shape is 21cm . It bent into the shape of a rectangle ,whose length is 40 cm .Find the breath of the rectangle

Answer 1

Radius=21cm

Diameter=42 cm

Circumference=πd

=22/7*42

=132 cm

Perimeter of rectangle=circumference of circle

Perimeter of of rectangle = 2(l+b)

132=2(40+b)

132=80+2b

2b=132-80

2b=52

b=52/2

=26 =breadth=ans

Hope it helps :-)