Question

The cost of painting the whole surface area of a cube at the rate of 13 pause per square cm is rupees 343.98 the volume of the cube is

Answer 1

Hey friend ..!! here'z your answer
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cost of painting 13 paise per sq. cm is Rs 343.98

So we can divide the total cost by 13 to find the surface area of cube

So that the surface area of cube = 2646 cm^2

6a^2 = 2646
a^2 = 2646 / 6
a^2 = 441
a = 21 cm

So that the side of cube is 21 cm

Volume of cube = a^3
= (21)^3
= 9261 cm^3

So the volume of cube is 9261 cm^3

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#Hope it will help you lot my dear#
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Answer 2

Solution:-

surface area of cube = 6a^2

total cost = 6a^2 ×10 = 60a^2paise

given the cost = 343.98 ×100 = 343980 paise

= 60a^2 = 343980

= a^2 = 5733

= a = (5733)^1/2

valume of cube = a^3

= ((5733)^1/2)^3

= (5733)^3/2

= 5733×(57533)^1/2

= 434,083.13470693

by round figure

= 434,083cm^3