Question

a rectangular block of ice measures 40 cm by 25 CM by 15 CM .calculate its weight in kg ,if it is 9 by 10 of the weight of the same volume of water and 1 centimetre cube of water is 1 gram.

Answer 1

We have,

Volume of the rectangular box of ice=40×15×25 cm³=15000 cm³

Now,weight of 1 cm³ of water=1 gm

and,weight of 1 cm³ of ice=(9/10)th of the weight of 1 cm³ of water

So, weight of 1 cm³ of ice=(9/10)gm

So, weight of the rectangular block of ice=9/10×15000 gm

=13500 gm
=13.5 kg