Volumes Practice Test 1

Question : 37 of 40

Marks: +1, -0

The base diameter of a conical tomb is 28 m and its slant height is 50 m. Find the cost of white washing its curved surface at the rate of 80 paise per sq. m?

Rs. 1860
Rs. 1760
Rs. 1950
Rs. 1875

Validate

Solution:

Area of the curved surface of the cone =

{22}/7×{28}/2 × 50

= 22000 sq. m.
∴ Cost of white washing at 80 paise per sq. m = 2200 ×

{80}/{100}

= Rs, 1760

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