Question

A circular pond of diameter 42m is surrounded by a path of 3.5m.find the cost of flooring the path at the rate of Rs 40 per metre square.
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Answer 1

Answer:

Correct option is

A

Rs.2002

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

Answer 2

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