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Area of outer circle - are of inner circle = total area
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Answer:
Radius of circle=r
Area of small circle=πr²
bigger radius=r+2
area of big circle=π(r+2)² =(πr²+4π+4πr)
ATQ:
Area of big circle–Area of small circle=176cm²
=> πr²+4π+4πr–πr²=176
=>4π+4πr=176
=>4π(1+r)=176
=>r=15cm
Area of whole circle=πr²=3.141(15)²=706.73cm²
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