Question

A piece of wire in the shape of rectangular of length is equal to 8.9 CM breadth is equal to 54 millimetres reshape in the form of circle find the radius of circle in millimetres

Answer 1

Answer:45.5 mm

Step-by-step explanation:

Length= 8.9 cm= 89 mm

Breadth= 54 mm

Length of the wire= Perimeter of the rectangle= 2(l+b)

2(l+b)= 2(89+54) = 2*143= 286 mm

Circumfrence of the circle= 2*pie*radius

286 =2* 22/7* radius

286* 7/44 = radius

6.5*7= radius

Radius= 45.5 mm