Math
posted by Dolcez .
the pretty perfume company designed a new perfume bottle. The bottle is to be a spherical shape with a diameter of 7cm.
a) determine the volume and surface area of this bottle.
b) The spherical bottle has a conical shaped lid with a diameter of 5cm and a height of 4.5cm. Calculate the volume and surface area of the lid. Before you can use the surface area formula for a cone you will need to find the slant height of the lid.
Please show your work so I can understand how to do it.

a) diameter = 2r
Volume = 4/3πr^3
Surface area = 4πr^2
b) Surface area = πr^2 (base) + πrs (cone), where s is diagonal measure of side
Pythagorean theorem, h^2 + r^2 = s^2, to find value of s.
V = 1/3πr^2h
Insert the appropriate values into these formulas.
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