Please help with the question below (please try to answer in maximum 10/15 minutes and please answer all 3 boxes).

Part 1
The volume of the triangular prism is given by the formula
[tex]V=BL[/tex]where
B is the area of the triangular face
L is the length of the prism
so
[tex]\begin{gathered} B=(5)(5) \\ B=25\text{ cm}^2 \end{gathered}[/tex]L=4 cm
substitute
[tex]\begin{gathered} V=25(4) \\ V=100\text{ cm}^3 \end{gathered}[/tex]Part 2
The volume of the rectangular prism is given by
[tex]V=L*W*H[/tex]substitute given values
[tex]\begin{gathered} V=(8)(10)(6) \\ V=480\text{ cm}^3 \end{gathered}[/tex]Part 3
The volume of the composite figure is equal to
V=100+480