Question

A swimming pool is 20m in length, 14m in breadth and 3m in depth. Find the cost of cementing its floor and walls at the rate of Rs 15per square metre

Answer 1

Given that,

Length of a swimming pool = 20m

Breadth of a swimming pool = 14m

Height (or) depth of a swimming pool = 3m

Volume of a swimming pool = lbh

Volume = 20m×14m×3m

Volume = $840m^3$

Cost of cementing its floor and walls = rate × volume

Cost of cementing = $15/m^2$ × $840m^3$

Cost of cementing = Rs. 56 (or) $56.

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Answer 2

Answer;

Given,

Length = 20

Breadth = 14

Height = 3

Volume of cuboid= l×b×h

= 20×14×3

=60×14

=840 cm3