16,20,22.

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May 16th, 2015

16)  for height of cone

h/7 = cot 32

h = 7 * 1.6003 = 11.20 ft

volume of cone = 1/3*(pi r^2*h)

                    = 1/3(22/7)*7*7*11.20   ,  pi = 22/7

                    = 574.93 cubic ft

20)    volume = volume of cylinder + volume of cone

                     = pi r^2 h + 1/3(pi r^2 h1)

                   = pi r^2 (h + h1/3)

                   = 3.14*9(7 + 1)

                  = 3.14*9*8

              = 226.08    cubic cm

22)      volume = volume of cone1 + volume of cone2

                       = 1/3(pi r1^2 h1) + 1/3(pi r2^2 h2)

                   = 1/3 pi (r1^2*h1 + r2^2*h2)

                 = 1/3*3.14(1/4 + 2)

                  = 1/3*3.14(9/4)

           = 2.36 cubic ft

May 16th, 2015

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May 16th, 2015
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