Question
The radius of a cone matches the radius of a circle with an area of 1386 cm². The slant height of the cone is twice the length of a rectangle with an area of 84 cm² and a breadth of 7
The radius of a cone matches the radius of a circle with an area of 1386 cm². The slant height of the cone is twice the length of a rectangle with an area of 84 cm² and a breadth of 7
cm. Calculate the lateral surface area of the cone.
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