B. 340 cubic inches
Divide shape into a rectangular prism and triangular prism:
HEIGHT of triangular prism:
10 in. - 6 in. = 4 in.
VOLUME of triangular prism (1/2 • l • w • h):
1/2 • 5 in. • 8.5 in. • 4 in. = 85 in^3
VOLUME of rectangular prism (l • w • h):
5 in • 8.5 in. • 6 in. = 255 in^3
ADD THE VOLUME OF BOTH FIGURES:
255 in^3 + 85 in^3 = 340 in^3
FINAL ANSWER:
340 in^3
HOPE THIS HELPS!
