Question

( 81 ft³/textyd³ ) of concrete is equal to:

a) 240
b) 730
c) 2.2 × 10³
d) 27
e) 3.0

Answer 1

81 cubic feet of concrete is equal to 3 cubic yards, matching option (e) 3.0 in the multiple-choice question.

Step-by-step explanation:

The student asks how many cubic yards are in 81 cubic feet of concrete. To convert cubic feet to cubic yards, we use the relationship that there are 27 cubic feet in 1 cubic yard. Therefore, we can divide 81 cubic feet by 27 to find the cubic yards.

81 ft³ ÷ 27 ft³/yd³ = 3 yd³

So, 81 cubic feet of concrete is equal to 3 cubic yards. This corresponds to option (e) 3.0.