Question

how many cubic yards of concrete would be needed to fill a foundation hole that is 3 ft. wide, 6 ft. long and 3 ft. deep?
(a) 1
(b) 2
(c) 3
(d) 6
question 31
___ is the math that most welders use on a daily basis.
(a) geometry
(b) trigonometry
(c) arithmetic
(d) calculus

Explanation:

Step1: Calculate volume in cubic - feet

Volume \(V = l\times w\times h=6\times3\times3 = 54\) cubic - feet.

Step2: Convert cubic - feet to cubic - yards

Since 1 cubic - yard = 27 cubic - feet, then \(\frac{54}{27}=2\) cubic - yards.

Answer:

For the first question: B. 2
For the second question: C. Arithmetic