Question

A book is in the shape of a right rectangular prism. It measures 812 inches tall, 7 inches wide, and 212 inches thick.

Answer 1

We know that
the Volume of a prism=a*b*c
a----> tall--------> 8 1/2 in=8.5 in
b-----> wide-----> 7 in
c-----> thick-----> 2 1/2 in=2.5 in
therefore
V=8.5*7*2.5=148.75 in³------------equal a 148 3/4 in³

the answer is the option c 148 3/4 in³