Matt and mindy each built a rectangular prison that has a length of 5 units, a width of 2 units, and a height of 4 units. matt used cubes that are 1 cm on each side. mindy used cubes that are 1 in. on each side. what is the volume of each prism?

Matt's volume would be 90 cm. cubed
Mindy's volume would be 90 in. cubed

Matt's volume is  90 cm. 
Mindy's volume is 90 in
I hope this helps

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.