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4.
The diagram shows a cylinder and a cone each of
base radius 5 cm and perpendicular height 10 cm.
Find
(a) the slant height of the cone,
(b)
the ratio of the curved surface area of the
cylinder to that of the cone.

4. The diagram shows a cylinder and a cone each of base radius 5 cm and perpendicular height 10 cm. Find (a) the slant height of the cone, (b) the ratio of the class=

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