Question

A water tank is 50cm by 30cm by 20cm. If 1 litre of water costs 300 taka, what is the total cost to fill up the tank with water?

Answer 1

Explanation:

The volume of the tank= (50x30X20) cm^3

= 30000cm^3

= 30 l

1 l costs 300 tk

therefore 30 l costs= 30X300 taka

= 90000 taka

Answer 2

50 x 30 x 20 = 30000 cm cubed
There are 1000 cm cubes in one litre
30000/1000 = 30 litres
So 300 x 30
9000 taka