Question

A wall of length $10$ m was to be built across an open ground. The height of the wall is $4$ m and thickness of the wall is $24$ cm. If this wall is to be built up with bricks whose dimensions are $24$ cm $\times 24$ cm $\times 24$ cm, how many bricks would be required?

• A. $500$
• B. $556$
• C. $695$
• D. $704$

Answer 1

The correct option is C $695$

Since the thickness of wall and brick is same, we only need to figure out the area of the wall, which on dividing with the area of brick will give us the number of bricks.

But the standard procedure lies

Number of Bricks$=\frac{Volumeofwall}{Volumeofbrick}=\frac{10\times 4\times 0.24m^3}{0.24\times 0.24\times 0.24m^3}=694.44$

Closest integer is taken as answer because come as a whole , so, $695$ is the answer.