Mult. these 3 dimensions together to obtain the volume of the prism:
(12 ft)(5/12 ft)(10 1/12 ft). Expressing all of these factors as improper fractions, we get:
12 5 121 5(121) ft^3
------ * ------ * -------- = ----------------- = 50.42 ft^3 = volume of the prism
1 12 12 12