A semi-circular lamina of radius 35 cm is folded so that the two bounding radii are joined together to form a cone- Find -i- The radius of the cone-ii- The -lateral- surface area of the cone-

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A semi-circular lamina of radius 35 cm is folded so that the two bounding radii are joined together to form a cone. Find :(i) The radius of the cone.(ii) The (lateral) surface area of the cone.

A semi-circular lamina of radius $35 c m$ is folded so that the two bounding radii are joined together to form a cone. Find :
(i) The radius of the cone.
(ii) The (lateral) surface area of the cone.