Only ques no. 18
18. A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filed in the interior. The diameter of the pencil is 7mm and the diameter of the graphite is 1mm. If the length of the pencil is 14cm, find the volume of the wood. (use = 22/7)
OR
A heap of wheat is in the form of a cone, the diameter of whose base is 14m and height is 3m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required.
Dear Student,
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Kindly refer to the link for the similar query.
https://www.meritnation.com/ask-answer/question/a-lead-pencil-consists-of-a-cylinder-of-wood-with-solid-cyl/surface-areas-and-volumes/6295860
Regards