The form he builds is 40 1/2 in. long, 10 in. deep, and 8 in. high. how much cement is needed to fill the form

This question clearly states that it is a 'find the volume' question.

Given dimensions of the object are :

Length of the object = inches or 40.5 inches

Depth of the object = 10 inches

Height of the object is = 8 inches

So, the volume becomes = = 3240 cubic inch

Hence, the amount of cement needed is 3240 cubic inches.

step-by-step explanation:

10.50 + taxes which added up to 11.50