PLEASE HELP ME WITH THIS ITS MY LAST PROBLEM THANKS

Answer:
The answer to your question is V = 82.5 in³
Step-by-step explanation:
Data
V = BH
a = 2.75 in
side = 4
height = 3 in
Process
1.- Calculate the area of the base (B)
B = Pa/2
P = number of sides x length of a side
= 5 x 4
= 20 in
B = (20)(2.75)/2
B = 55/2
B = 27.5 in
2.- Calculate the volume of the prism
V = (27.5)(3)
V = 82.5 in³