Question

a circle of radius 14 com is bent to made a rectangle. if ratio of length and breadth is 3:5 then what is length and breadth

Answer 1

circumference of circle = 2pi r= 2×22/7×14= 2×22×2=88cm

let length and breadth of rectangle be 3x &5x

perimeter of rectangle= 2(L+B)
2(3x+5x)= 2(8x)=16x

circumference of circle = perimeter of rectangle
88cm = 16x
x = 88/16 , 11/2

length = 3 (11/2)=33/2

breadth = 5(11/2) = 55/2

hope it helps you.