Question

Calvin builds a form for a new cement step. The form he builds is 35 1/2in. Long, 20 in. Deep, and 6 in. High. How much cementis needed to fll the form?

Answer 1

231.78 lbs

Explanation:

total amount of cementis needed= volume of form

volume of form in ft³= length × depth × height

= 35.5/12 × 20/12 × 6/12

= 2.465ft³

density of cement= 94.01651 lb/ft³

mass of cement= density × volume

= 2.465 × 94.01651

= 231.78lb