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Sahay Sir > Question Answers > NCERT Class 10 > Maths > Chapter 13 - Surface Areas and Volumes > A metallic right circular cone 20 cm 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 16/1 cm, find the length of the wire.

A metallic right circular cone 20 cm 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 16/1 cm, find the length of the wire.

A metallic sphere of radius 4.2 cm is melted and recast into the shape of a cylinder of radius 6 cm. Find the height of the cylinder.