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The figure below shows a sector of a circle. If the radius OA = 14cm and the angle AOB =720. (a) Calculate the area of the...

      

The figure below shows a sector of a circle. If the radius OA = 14cm and the angle AOB =720.
fig4211112019423.png
(a) Calculate the area of the sector.
(b) The sector is folded to form a cone. Calculate:-
(i) The radius of the cone formed.
(ii) The volume of the solid formed.
(c) A solid cone of same size in (b) above is melted down and casted into circular washers. Each washer
has an external diameter of 4cm, internal diameter of 1½ cm and 0.3cm thick. Calculate number of washers made.

  

Answers


Kavungya
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fig4411112019425.png
Kavungya answered the question on November 11, 2019 at 13:27


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