Question

A swimming pool is 20m in length 15m in breadth 4m in height find cost of cementing it's floor and walls at rupees 35per m

Answer 1

Answer:

The answer is given above

Thank you

Answer 2

Answer:

$l = 20m$

$b = 15m$

$h = 4m$

$area \: \: of \: 5 \: \: faces \: = 2 \times (l + b) \times h + lb$

$= 2 \times (20 + 15) \times 4 + (20 \times 15)$

=$(8 \times 35) + 300$

=$280 + 300$

$= 580 {m}^{2}$

$cost \: of \: \: 1 \: \: {m}^{2} = ₹35$

$cost \: \: of \: \: 580 {m}^{2} \: = ₹35 \times 580$

$=₹ 20,300$