Question

A tank is 20m in length 15m in breadth 4m in depth find the cost of cementing its floor and the four walls at the rate of Rs.50 per square metre​

Answer 1

Length=20m

Width=15m

Depth=3m

So area of the floor=15*20 sq.m=300sq.m

There are 2walls along the length and 2 walls along the width.

So the total area of the walls is

→{2*(20*3) + 2*(15*3)}sq.m

=(120 + 90) sq.m

=210sq.m

Total area to be repaired

=(300+210)sq.m=510sq.m

So total cost =510*25 =12750

Answer 2

Answer:

29000 Rs

Step-by-step explanation: