The sides of a triangular board are 13 meters, 14 meters and 15 meters. The cost of paining it at the rate of Rs. 8.75 per m 2 is?

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Accepted Answer

s = (13 + 14 + 15 ) / 2 = 21, s-a = 8 , s-b = 7, s-c= 6 ∴ Area to be painted = √ [s(s-a) (s-b) (s-c)] =√ [21 x 8 x 7 x 6] m2 = 84 m2 ∴ Cost of painting = Rs. (84 x 8.75) = Rs. 735

The sides of a triangular board are 13 meters, 14 meters and 15 meters. The cost of paining it at the rate of Rs. 8.75 per m 2 is?

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