Question

Ravi has built a cubical water tank with lid and each outer edge is 2.5 m long. The outer
surface of the tank excluding the base is covered with square tiles of side 25 cm long
find the number of tiles required.

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Answer 1

Answer:

Step-by-step explanation:

The surface area of the cubical tank = , where 'a' is the edge of the cubical tank.

Since, the tank is covered with square tiles but excluding the base.

So, Surface area of cubical tank to be covered with tiles =  ,

where 'a' is the edge of the cubical tank.

So, Surface area of tank =

As 1 m = 100 cm

Surface area of tank =

= 312500

As, Area of square tile =

=  = 625

So, Number of tiles = Surface area of cubical tank  Area of 1 tile

=

= 500

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