Question

A metallic right circular cone 20cm high and whose Vertical angle is 60 degree is cut into two parts at the middle of its height by a plane parallel to its base. If the frustum so obtained be drawn into a wire of diameter 1 by 16 cm find the length of the wire

Answer 1

Answer:

Step-by-step explanation:

7964.4m

Let given cone is OCD

and ABCD be the required frustum

Since frustum is drawn into wire

Volume of frustum ABCD = Volume of cylindrical wire

Given OP=20cm

and half height of frustum =10cm=OQ=QP

also Angle QOB=60 degree

We need to find the radius of base and top of the frustum

please check the attached pic for further solution

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