pls answer 20 points I will mark brainliest

Answer:
So to find the volume of triangle prism,
Find area of triangle = [tex]\frac{1}{2} (5)(3)=\frac{15}{2} =7.5in^{2}[/tex]
Then find the total volume of triangle prism= 7.5×6=45in³
Volume of triangular prism = 45in³
Now to find the volume of the rectangular piece,
Volume=width×height×length
= 7×3×16
= 336 in³
Volume of rectangular piece = 336in³
Total area= 45in³+336in³=381in³