a tank is a 20 m in length is 15 m in breadth and 4m in depth .find the cost of cementing its floor and the four wall at the rate of rupies 50pe square meter
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Answer:
Step-by-step explanation:
Area of tank= lateral surface area of tank + area of rectangle
=2(l+b)h+lb
=2(20+15)4+20×15
=2(35)5+300
=2(175)+300
= 350+300
=650 square metres
Cost for cementing 1 square metre=Rs.50
Cost for cementing 650 square metres= 650×Rs.50
=Rs.32500
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