A drumstick ice cream cone is 4 inches in diameter and has a height of 7 inches and filled with ice cream. The cone also has a sphere of ice cream that's 5 inches in diameter on top. What is the total amount of ice cream? Round to the nearest tenth.

Respuesta :

Answer:

48.7 cube inches

Step-by-step explanation:

Let us assume that the ice cream filled the entire volume of the cone.

Diameter of cone = 4 inches

height of cone = 7 inches

diameter of a sphere of ice cream = 5 inches

Total amount of ice cream = volume of cone + volume of sphere

volume of cone = [tex]\frac{1}{3}[/tex][tex]\pi[/tex][tex]r^{2}[/tex]h

r = [tex]\frac{diameter}{2}[/tex]

  = [tex]\frac{4}{2}[/tex] = 2 inches

volume of the cone = [tex]\frac{1}{3}[/tex] x [tex]\frac{22}{7}[/tex] x [tex]2 ^{2}[/tex] x 7

                           = [tex]\frac{1}{3}[/tex] x [tex]\frac{22}{7}[/tex] x 4 x 7

                           = 29.3333 cube inches

volume of sphere = [tex]\frac{4}{3}[/tex] [tex]\pi[/tex][tex]r^{3}[/tex]

r = [tex]\frac{diameter}{2}[/tex]

  = [tex]\frac{5}{2}[/tex] = 2.5 inches

volume of sphere ice cream = [tex]\frac{4}{3}[/tex] x [tex]\frac{22}{7}[/tex] x [tex](\frac{5}{2} )^{3}[/tex]

                                   =  [tex]\frac{4}{3}[/tex] x [tex]\frac{22}{7}[/tex] x [tex]\frac{125}{27}[/tex]

                                   = 19.40 cube inches

So that,

Total amount of ice cream = 29.33 + 19.40

                                   = 48.7 cube inches