Answers

2014-08-06T00:26:11+08:00
Height =  28
radius of base = 7
slant height =    l²  =   28²+ 7²  =  833
                           l = √833 = 28.86
vol of cone = 1/3 area of base x vertical height
                   = 1/3 πr² h =  1/3π 7² . 28
                   = 1436.9ft³
lateral area of cone = πrl         l = slant height
                              = π7 * 28.86 ~  634.74 ft²
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2014-08-06T05:57:05+08:00