Question

the circumference of acircle A is 132 . it is equal to the sum of the circumference of two circle B AND C. the radius of circle B is 14 cm. find the radius of the circls C

Answer 1

2πr=132
πr=66
22/7.r=66
r=66*7/22
r=21
Let 1st circle radius -R1
2nd. -R2
3rd. -R3
2πR2+2πR3=2πR1
2π{R2+R3}=2πR1
2π will be cut...
therefore
R2+R3=R1
14+R3=21
R3=21-14
=7