Question

An evaporation pan of $1.25m$ diameter placed in a catchment area receives $10mm$ rainfall. The total evaporation on that day is $5mm$. The net volume of water collected in the evaporation pan will be____ $c{m}^3$.

• A. 6135

Answer 1

The correct option is A 6135
For given data,
$\text{Rainfall, P = 10 mm}$

$\text{Pan evaporation, E = 5 mm}$

$\text{Area of pan, A}=\frac{\pi }{4}\times {1.25}^2=1.227m^2$

As rainfall is greater than evaporation , water gets stored in the pan.

Net volume of water stored

$V=A(P-E)$

$=1.227\times (10-5)\times {10}^4\times {10}^{-1}$

$=6.135\times {10}^{3}c{m}^3$

$=6135c{m}^3$