Question

The cost of painting the whole surface area of a cube at the rate or 13 paise per cm² is ₹ 343.98. The volume of the cube is :?​

Answer 1

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Answer 2

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GIVEN :

Cost of painting the whole surface area of a cube = ₹ 264.60 = 264.60 × 100 = 26460 paise

Rate = 13 paise per cm²

Let 'a’ be the side of the cube.

Total cost = Surface area × rate

Surface area = Total cost / rate

Surface area = 26460 /13= 1895

Surface area = 1895 cm²

Surface area of cube = 6a²

1895 = 6a²

a² = 1895/6 = 315

a² = 315

a = √315

a = 17.74

Volume of cube = side³ = a³

Volume of cube = 17.74³ = 5582cm^3