Question

A wire in the form of a rectangle 18.7 cm long and 14.3 cm wide is reshaped and bent into the form of a circle. Find the radius of the circle so formed.

Answer 1

Perimeter of rectangle = 2 (l+b)
=2 (18.7+14.3)
2 (33)
66cm
According to the question
Perimeter of rectangle = Perimeter of circle
Perimeter of circle = 2pie r
Let the radius be x
2×22/7×x=66
44/7x=66
x=66×7/44
x=3×7/2
x=21/2
x=10.5 cm

Answer 2

Answer:

Step-by-step explanation:

According to the question

Perimeter of rectangle = Perimeter of circle

Perimeter of circle = 2pie r

Let the radius be x

2×22/7×x=66

44/7x=66

x=66×7/44

x=3×7/2

x=21/2

x=10.5 cm