10. The floor of a rectangular hall has a perimeter of 64 m. Its height is 5 m. the cost of painting its four walls at the rate of Rs 8 per sq. m.
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Step-by-step explanation:
The cost of painting is at the rate of Rs 8.40 m per square meter. Cost of painting four walls = Rs 8.40 x 1062 = Rs 8920.80. Therefore, The cost is Rs. 8920.80.
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