Question on volume of swimming pool Swimming pool is of length 20m, wide 5m and height of the swimming pool increase from the 1.6m to 4.4m. What is the volume of swimming pool? How I approached: Area of swimming pool = Area of cube + Area of prism Area of cube = l * b * h So Area of cube = 20 * 5 * 1.6 Are of prism = ???

No calc needed here:

$20\times5\times1.6$ for the cube $= 160$.

$20 \times 5 \times \frac{ 4.4 - 1.6 }2$ for the prism $= 140$ (just take the average of the two heights since the bottom is flat, if it were curved then we get into calc).

Total is $300$.