Question

outer surface area of a cube is painted at the rate of Rs 1.50 per square of that amount paid is rupees 8100 find the side of the cube​

Answer 1

Answer:

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given the side of the cube = 6m

TSA of the cube = 6 × side²

= 6 (6)²

= 6 × 36

= 216m²

ATQ, the cost of painting is rs 2 per 100cm²

therefore cost of 1cm² = 2/100 = rs 0.02

we know that 1m² = 10000cm²

216m² = 2160000cm²

hence total cost of painting the cube = 2160000 × 0.02 = rs 43200