Question

The Radius of pieces of wire in circulae shape is 10.5 cm.it is bent into the shape of a. rectangle of length 20cm.find the breadth and area of Rectangle

Answer 1

circumference of circle=perimeter of rect.
2*22/7*10.5=2(20+b)
44*1.5=40+2b
2b= 26
b=13cm
l*b= area
20*16= area
area=320cm^2

Answer 2

circumference of a circle = perimeter of a rectangle

2×22/7×10.5=2(20+b)

44×1.5=40+2b

2b = 26

b = 13 cm