the inner diameter of a ring shaped iron sheet is 12 cm and its outer diameter is 16 cm find the area of the iron sheet in the ring
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Answer:
88 cm²
Step-by-step explanation:
inner d=12
r=12/2
=6
area1=πr²
=pi*6²
=36π cm²
outer d=16
r=16/2
=8
area2=πr²
=π*8²
=64π cm²
Therefore area of ring= 64π-36π = 28π = 28*22/7 = 4*22 = 88 cm
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