Question

a swimming pool is 20 metre in length 15 metre and breadth and 4 metre in depth find the cost of cementing its floor and walls at the rate of
rupees 12 per square metre ​

Answer 1

Step-by-step explanation:

I think the answer is right

Answer 2

Given :-

• Length of the Pool = 20m
• Breadth of the Pool = 15m
• Height of the Pool = 4m
• Rate of Cementing = Rs,12 per m

To Find :-

• Cost of Cementing the Pool

Solution :-

➞ Total Area = Area of 4 walls + Area of Floor

➞ Total Area = 2 (l + b) × h + l × b

➞ Total Area = 2 ( 20 + 15 ) × 4 + 20 × 15

➞ Total Area = 2 × 35 × 4 + 20 × 15

➞ Total Area = 2 × 35 × 4 + 300

➞ Total Area = 8 × 35 + 300

➞ Total Area = 280 + 300

➞ Total Area = 580m²

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⟾ Cost of Cementing 1m² = Rs,12

⟾ Cost of Cementing 580m² = Rs,12 × 580

⟾ Cost of Cementing 580m² = Rs,6960

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Therefore, Cost of Cementing the pool is Rs,6960

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