What will be the cost of polishing a circular table top of radius 7m at the rate of Rs 10 per square meter
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Answer:
Area =4πd2=722×24×4=3.4×8m2
Cost = Rate × Area =m2Rs25×3.14×8m2
=25×8×3.14m2=200×3.14m2
=628m2 Ans
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