Which statement is true when justifying the formula to find the volume of triangular prisms (V=Bh)?
1. The volume is the length of the base times the length of the height.
2. The base of the prism is a square, so the area of B is (s)(s).
3. The base of the prism is a square, so the area of upper B is left parenthesis s right parenthesis left parenthesis s right parenthesis .
4. The base of the prism is a triangle, so the area of B is 12bh.
5. The base of the prism is a triangle, so the area of upper B is Start Fraction 1 over 2 End Fraction b h .