the volume of the prism is
V=L*W*H
we have
L=2
W=1 1/2=1+1/2=3/2
H=1 1/2=1+1/2=3/2
substitute
V=(2)(3/2)(3/2)
V=9/2 units3
V=8/2+1/2=4+1/2=4 1/2 units3
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