Find the total cost of painting all the sides
of a cube of edge 42 cm at the rate of
1.50 per cm?
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Edge (a) = 42 cm
Total Surface Area = 6a²
Total Surface Area = 6(42)²
Total Surface Area = 10584 cm²
Rate = 1.50/cm²
Cost of painting = 1.50×10584
Cost = 15876
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