5) a swimming pool is 25 m in length 20 cm and breadth and 6 metre in depth. Find the cost of cementing its floor and walls at the rate of rupees 12 per square metre.
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Step-by-step explanation:
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The cost is Rs 34200
Step-by-step explanation:
length = 25m
breadth = 20m
height = 5m
The walls = Lateral surface area = 2h(l+b)
area of the floor = lb
area to be cemented= 2h(l + b ) + lb
Surface area = 2h(l + b ) + lb
= 2 × 5 ( 25 + 20 ) + 25 × 20 m
= 2 × 5( 45) + 500
= 950 m²
Cost per m² = Rs 36
cost for 950 m² = 950 × 36 = Rs 34200
The cost is Rs 34200
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