9: (4.5in)(3.5in)(7in) = 110.25 in³
10: right side of the page is cut off
11: (6in)(4in)(5in)= 120 in³
(12in)(8in)(10in) = 960 in³
Prism B's volume is 8 times greater than prism A's volume.
12: right side of the page is cut off
13: (6.5in)(2.5in)(4in) = 65 in³
.9(65in³) = 58.5 in³