Question

The side lengths of two different cubes are 36 cm and 45 cm. what is the ratio of the volume of the smaller to the volume of the larger (in simplest form)?

Answer 1

So it’s 45:36
And what can go into both? 9!

So you divide
45 by 9 =5
36 by 9 = 4

So the ratio in its simplest form is 5:4

Answer 2

Ratio of their  sides = 36:45 =  4:5

So the ratio of the volumes = 4^3:5^3 =  64:125 (answer)