Answer:
42 cubic feet
Step-by-step explanation:
Formula for triangular prism(the figure in your picture): Volume=(B)H
B=Base=1/2bh — b=4ft h=3.5 ft
H=Height of prism= 6ft
So substitute formula:
Volume=(1/2(4)(3.5))*(6)
Volume=7*6
Volume=42 cubic feet