PLEASEEEE HELP ME ILL GIVE YOU BRAINIEST!!

Answer:
48 in³
Base Area:
[tex]\hookrightarrow \sf \dfrac{1}{2} *base*height[/tex]
[tex]\hookrightarrow \sf \dfrac{1}{2} *3*8[/tex]
[tex]\hookrightarrow \sf 12 \ in^2[/tex]
Volume:
[tex]\hookrightarrow \sf 12 * 4[/tex]
[tex]\hookrightarrow \sf 48 \ in^3[/tex]