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
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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
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