Question

find the cost of painting and open underground tank of size 3 X 2 mX 1.5 m at rupees 50 M per metre square

Answer 1

Answer:

Given that 

The length of the tank = 3m.

The Breadth of the tank = 2m.

The height of the tank = 1.5m

We know that Area of the surface = 2(bh + lh) + lb

                                                         = 2(2 * 1.5 + 3 * 1.5) + 3 * 2

                                                         = 2(3 + 4.5) + 6

                                                         = 2(7.5) + 6

                                                        = 21.

Total area of painting = 21m^2.

Given cost of painting = 20 per m^2

Total cost of painting = 20 * 21

                                   = 420.

Therefore the total cost of painting = 420 rupees.

Hope this helps!

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