#18 The base area is 14 in ² The volume is 30.8 in ³ For a prism of any cross-sectional area, Volume = base area * height => 30.8 = 14 * height Solve for height Height = 30.8/14 = 2.2 inches.
Ans. Joseph has to make the box 2.2 inches high.
19. Hexagonal prism Given Cross section area = 17.01 m ² Height = 16.2 m
Using above formula for volume, Volume = 17.01 m ² * 16.2 m =275.562 m ³
Answer: The volume of stone is 275. 56 m ³ approximately.
