Question

the sum of circumference of two circle is 132 CM if the radius of one circle is 14 cm find the radius of second circle.

Answer 1

Hey mate,

ATQ,

2 × pie × r + 2 × pie × R = 132

88 + 2 × pie × R = 132

2 × pie × R = 44

R = 7 cm

hope this helps you out!

Answer 2

Solutions :-

Given :
The sum of circumference of two circle = 132 cm
Radius of one circle = r1 = 14 cm

Let the Radius of second circle be r2


Find the Radius of the second circle :-

According to the question,

=> 2πr1 + 2πr2 = 132
=> 2 × 22/7 × 14 + 2 × 22/7 × r2 = 132
=> 2×22/7 (14 + r2) = 132
=> 14 + r2 = (132 × 7)/2 × 22
=> 14 + r2 = 21
=> r2 = 21 - 14 = 7


Hence,
The radius of second circle = 7 cm