The flask consist of a cylindrical part and a frustum of a cone. The diameter of the base is 10 cm the diameter is 2 cm while that of neck is 2 cm. The vertical height of the flask is 12 cm.
(a) the slant height of the frustum part;
(b) the slant height of the smaller cone that was cut off to make the frustum part.
(c) the external surface area of the flask. (Take pi = 3.142)
Height = 12 - 2
= 10
Cylindrical part = 12 - 2
= 2
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did this a while back. See your previous post in the related questions below. If you're still stuck, show how far you got.
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