Question

Hameed has built a cubical water tank with lid for his house, with each
outer edge 1.5 m long. He gets the outer surface of the tank excluding the base,
covered with square tiles of side 25 cm. Find how much he would
spend for the tiles, if the cost of the tiles is
`
360 per dozen.

Answer 1

@chmvijay

Answer 2

@timo86m

Answer 3

@Suchandrarao

Answer 4

hmm lol figure?

Answer 5

No figures ... sorry wrote question wrongly

Answer 6

I got the help from @Suchandrarao , Thankyou http://ncert.nic.in/NCERTS/l/iemh113.pdf 13.5 example 2

Answer 7

Reply here I want to medal you

Answer 8

okay yaar

Answer 9

The length of each edge of water tank ( a) = 1.5 m = 150 cm
Given, the base of water tank is not covered with tiles, So, five outer faces will be covered by squares tiles.
Therefore,
Surface area of water tank = 5a^2=5(150)^2=112500cm^2
side of square tile = 25 cm
So, Area of each square tile = (side)^2=25^2=625cm^2
Number of square tiles required = (Area of water tank) / (Area of each square tile
=112500/625=180
Now, Given, Cost of 1 dozen ( = 12 tiles) tiles = Rs 360
so cost of 180 titles=360/12*180=5400
Hence, he will spend Rs 5400 for the tiles.