The floor of a rectangular hall has a perimeter of 250 m. Its height is 6 m. Find the cost of painting its four walls at the rate of Rs. 6 per square metre.

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Solution

Perimeter of floor = 250 m
Height = 6 m
Area of 4 walls = $250 \times 6 = 1500$ $m^{2}$
Cost of painting 1 sq. m = Rs. 6
Cost of painting 4 walls = $1500 \times 6 = R s . 9000$

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The floor of a rectangular hall has a perimeter of 250 m. Its height is 6 m. Find the cost of painting its four walls at the rate of Rs. 6 per square metre.

Perimeter of floor = 250 mHeight = 6 mArea of 4 walls = 250×6=1500 m2Cost of painting 1 sq. m = Rs. 6Cost of painting 4 walls = 1500×6=Rs.9000

Perimeter of floor = 250 m
Height = 6 m
Area of 4 walls = $250 \times 6 = 1500$ $m^{2}$
Cost of painting 1 sq. m = Rs. 6
Cost of painting 4 walls = $1500 \times 6 = R s . 9000$