A solid consists of a cone on top of a cylinder with a radius equal to that of the cone. The height of the cone is #5 # and the height of the cylinder is #7 #. If the volume of the solid is #42 pi#, what is the area of the base of the cylinder?

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Answer 1 · 2016-04-16T12:57:41

#Axxh_(cy)+1/3xxAxxh_(co)=V#
#=>Axx(h_(cy)+1/3xxh_(co))=V#
#=>Axx(7+1/3xx5)=42pi#
#: . A =(42pixx3)/26#