Question

A piece of wire in the shape of a rectangle whose length and breadth are 14 cm and 8 cm given is rebent in the form of a circle. Find the radius of the circle

Answer 1

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Length of rectangle = 7 cm

Breadth of rectangle = 4 cm

Perimeter of rectangle = circumference of circle

2(l+b)=2πr

11cm=(

7

22

×r)cm

r=

22

11×7

=

2

7

cm

r=3.5cm