A courtyard is 25 m long and 16 m broad is to be paved with bricks of dimensions 20 cm by 10 cm. What is the total number of bricks required ?
A. 16000 $${\text{ bricks}}$$
B. 18000 $${\text{ bricks}}$$
C. 20000 $${\text{ bricks}}$$
D. 22000 $${\text{ bricks}}$$
Answer: Option C
Solution(By Examveda Team)
Given length and breadth of courtyard is 25 m long and 16 m respectivelyArea of courtyard :
$$\eqalign{ & = \left( {25 \times 16} \right)sq.{m^2} \cr & = 400\,sq.{m^2} \cr} $$
Dimensions of bricks 20 cm by 10 cm
Area of the surface of brick $$ = \left( {\frac{{20 \times 10}}{{10000}}} \right){m^2}$$
∴ Number of bricks :
$$\eqalign{ & = \frac{{400}}{{\frac{{20 \times 10}}{{10000}}}} \cr & = \frac{{400 \times 10000}}{{20 \times 10}} \cr & = 20000\,{\text{ bricks}} \cr} $$
Related Questions on Area
A. 15360 m2
B. 153600 m2
C. 30720 m2
D. 307200 m2
E. None of these
A. 2%
B. 2.02%
C. 4%
D. 4.04%
E. None of these
A. 16 cm
B. 18 cm
C. 24 cm
D. Data inadequate
E. None of these
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
A. 40%
B. 42%
C. 44%
D. 46%
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