Answers

The Brainliest Answer!
2015-07-05T00:48:11+05:30
We know, C=2πr=πd
Now, C-d=90cm
So, C=90+d
Putting the value
90+d=πd
90+d=22d/7
90=22d/7 -d
90=22d/7 -7d/7
90=15d/7
d=90*7/15=42
We know, r=d/2=42/2=21cm
And, C-d=90,
C=d+90=132cm
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