MCQ
How many bricks will be required to construct a wall 13.5m long; 6m high and 22.5cm thick if each brick measures (27cm × 12.5cm × 9cm)?
- A6000
- B3750
- C5000
- D7500
✓
Answer
- 6000
Solution:
Length of the wall = (13.5 × 100)cm = 1350cm
Breadth of the wall = 22.5cm
Height of the wall = (6 × 100)cm = 600cm
Volume of the wall = (1350 × 22.5 × 600)cm3
Volume of each brick = (27 × 12.5 × 9)cm3
Number of brick required $=\frac{\text{Volume of the wall }}{\text{Volume of 1 brick }}$
$=\Big(\frac{1350\times22.5\times600}{27\times12.5\times9}\Big)=6000$
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