find the volume of a triangular prism with the following dimensions round to the nearest whole number.

triangle base: 5 ft
triangle height: 3 ft
prism height: 7.5 ft

a. 56 ft
b. 19 ft
c. 113 ft
d. 8 ft

The formula for the volume of a triangular prism is:

V = (1/2) * triangle base * triangle height * prism height

Substituting the given values:

V = (1/2) * 5 ft * 3 ft * 7.5 ft
V = 56.25 ft^3

Rounding to the nearest whole number:

V ≈ 56 ft^3

Therefore, the answer is (a) 56 ft.