Rs aggarwal solutions
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Volume and Surface Area of Solids | Volume and Surface Area of Solids Exercise 20A

Question 7
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Question 7

A pit 5m long and 3.5m wide is dug to a certain depth. If the volume of earth taken

out of it is 14 m3, what is the depth of the pit?

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We know that volume of cuboid = length × breadth × height

Let the depth of the pit is x m.

Therefore, V= 5 × 3.5 × x

But volume is 14 m3

x = V/ 5 × 3.5

x = 14/ 5 × 3.5

x= 0.8 m=80cm

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