A pipe trench is roughly rectangular with dimensions 75 ft long by 2 ft wide and with an everage depth of 3 1/2 ft. What volume of dirt was removed?

Question

Math, Algebra

Answer 1

75 x 2 x 3 1/2

= 75 x 2 x 7/2

= 75 x 7

= 525 cubic feet

=525/27 = 19 4/9 cubic yards

1 yd = 1 ft

1 yd^3 = 3^3 ft^3 = 27 ft^3

or work the problem in yards

75/3 x 2/3 x 1 1/6

= 25 x 2/3 x 7/6

= 25 x 7/9

= 175/9

= 19 4/9 yd^3