Answer:
B) [tex]115.5m^3[/tex]
Step-by-step explanation:
to find the volume we need to find first the area of the triangle, and then multiply by 11 which is the length of the prism:
the measurements are:
[tex]base=7m[/tex]
[tex]height=3m[/tex]
[tex]length=11m[/tex]
the area of the triangle in one side is:
[tex]triangle=\frac{(base)(height)}{2} \\triangle=\frac{(7m)(3m)}{2}\\ triangle=\frac{21m}{2}\\ triangle=10.5m^2[/tex]
and now to find the volume of the prism we multiply the area of the triangle by the length of the prism:
[tex]volume=(triangle)(height)\\volume=(10.5m^2)(11m)\\volume=115.5m^3[/tex]
which is option B)
