A rocket is in the form of a cone mounted on a right circular cylinder their common diameter is 8cm. The heights of cylindrical and conical shapes are 6cm and 3cm respectively. Find the surface area of rocket.
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Step-by-step explanation:
The diameter of cone is =8cm
The radius of cone is =
2
8
=4
The height of cone is =3
The volume of cone is =
3
1
πr
2
h
3
1
π4
2
×3
16π
The height of Cylinder is= 6
The volume of cylinder is= πr
2
h
=π4
2
×6
=96π
So the total volume of rocket is= 16π+96π=112π=
7
22
×112=22×16=352
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