Question

In a shower, $5$cm of rain falls. The volume of water that falls on $1.5$ hectares of ground is :

• A. 75 cu. m
• B. 750 cu. m
• C. 7500 cu. m
• D. 75000 cu. m

Answer 1

The correct option is B 750 cu. m

depth of rain water $=5cm$.

are of land on which rain falls $=1.5$ hectares

$=1.5\times {10}^{8}c{m}^2$

volume of water from rain $=$ area $\times$ depth

$=1.5\times {10}^8\times 5c{m}^3$

$=7.5\times {10}^{8}c{m}^3$

$=7.5\times {10}^2{m}^3$

Volume of water from rain $=750m^3$