A circular garden with radius 42 m is surrounded from outside by a path of 3.5 m wide. Find the cost to pave the stones on the path at the rate of Rs. 20 per m2.
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Answer:
Internal Radius = 21 m, External Radius =21+3.5=24.5 m
Area of path = π(24.5)2−π(21)2
⇒π[(24.5)2−(21)2]
=500.5
Cost of travelling =500.5×4=Rs.2002
Step-by-step explanation:
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