Question

find the total surface area and lateral surface area of a cubical water tank with each outer edge as 1.5 metre long if each of its four outerside are covered with square tiles of side 25 cm then how many such tiles will be required ? plz give me correct answer​

Answer 1

The length of the each side of water tank =1.5m=150cm

As it is given that base is not covered with tiles so, five sides of the tank are

covered with tiles.

Therefore,

Surface area of water tank =5a

2

=5(150)

2

=112500 cm

2

Side of tile =25 cm

Area of tile =25

2

=625 cm

2

Number of tiles to cover five sides of the tank =

625

112500

=180

Now,

Cost of one dozen tiles =Rs.360

Hence, total cost of 180=

12

360

×180=Rs.5400

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