find the area of the ring in the given figure
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91pi cm² is the answer
hope it helps
papiyaghosh1976kgp:
thanks can u sent me the solution of this question
ok pls wait
yah
first find area of bigger circle which is pi × R² here R is 10 cm so area will be 100pi cm². then find area of inner circle of radius by same method. it will be 9pi cm². Since it is a ring it will be hollow . so subtract area of inner circle from area of outer circle.
ok thanks
Answered by
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285.88
A=π(R2 + r2 )
22/7 ( 10² + 3²)
22/7 ( 100+9)
22/7 × 109
= 285.88 cm ²
sorry you have to minus
it's okk
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