Question

A swimming pool of length 12 m and height 7 $\frac{1}{2}$ m can hold 7,20,000 litres of water. What is the breadth of the swimming pool ?

• A. 4 m
• B. 8 m
• C. 6 m
• D. 7 m

Answer 1

The correct option is B

8 m

Volume = 7,20,000 litres

1000 litres = 1 cubic metre

$7,20,000litres=\frac{720000}{1000}=720cubicmetres$

Given:

length= 12 m

height = 7 $\frac{1}{2}$ =$\frac{15}{2}$ m

Volume $V=length\times breadth\times height$

Volume $720=12\times breadth\times \frac{15}{2}$

$\Rightarrow 720=12\times breadth\times \frac{15}{2}$

$\Rightarrow 720=90\times breadth$

$\Rightarrow breadth=\frac{720}{90}=8m$