it have 3 sides but in the formula we have 4 sides which is (A b sides) (B base sides ) (C base side ) and (height) HEEELLLLPPPP!!

Answer:
225 m³ or 225 cubic meters
Step-by-step explanation:
Actually it has 5 sides, the 2 bases, the 3 lateral faces.
The formula for the volume of a triangular prism is: [tex]\frac{h*b*l}{2}[/tex]
Using the given measurements, we get:
[tex]\frac{9*5*10}{2} =\\\\\frac{450}{2} =\\\\225[/tex]
The volume of the prism is 225 m³