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What is the cost of digging a pit of cuboidal shape dimensions of which are 5m * 6m * 3m at the rate of ₹35/m^3?

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in Mathematics - Class 9 by (679k points)
What is the cost of digging a pit of cuboidal shape dimensions of which are 5m * 6m * 3m at the rate of ₹35/m^3?

(a) ₹3000

(b) ₹3150

(c) ₹3375

(d) ₹3225

This question was posed to me in a national level competition.

This question is from Volume of a Cuboid topic in chapter Surface Areas and Volumes of Mathematics – Class 9

1 Answer

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Best answer
Correct answer is (b) ₹3150

Easy explanation: Volume of the pit = 5 * 6 * 3

= 90m^3

Cost of digging of 1m^3 = ₹35

Therefore, cost of digging 90m^3 = 90 * 35

= ₹3150.

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