Question

a swimming pool is 20m in length, 15m in breath and 4m in depth. Find the cost of cementing its floor walls at the rate of ₹12 per metre square​

Answer 1

Step-by-step explanation:

lateral surface area of cuboidal swimming pool=

2×[lb+bh+hl]

2×[(20×15)+(15×4)+(4×20)]

2×(300+60+80)

2×440

440- area of rectangle

440-20×15

440-300

140m²

cost of cementing=140×12

=Rs1680