Question

22) The sum of circumferences of two circles is 88cm & the difference of their radii is 2cm.
Find the radii of the circles.​

Answer 1

Answer:

R1=8cm

R2=6cm

Step-by-step explanation:

2πr1+2πr2=88cm

[R1=2+R2]-(1)

2π(R1+R2)=88cm

2π(2+R2+R2)=88cm-{using (1)}

2π(2+2R2)=88cm

4π(1+R2)=88cm

1+R2=88/4π

1+R2=7cm

R2=6cm

Since,R1-R2=2cm

:R1-6=2cm

Therefore,R1=8cm