Question

A semi-circle is folded to form a cone . The radius OA will form

Answer 1

Step-by-step explanation:

If a semicircle is folded to form a cone,the radius will be the circumference of the base of the cone.

Answer 2

The radius will become slant height of the cone.

GIVEN

Radius of semicircle = OA

TO FIND

What will the radius of the semi circle forms after folding it into a cone.

SOLUTION

The above problem can be simply solved as follows;

Radius of the semicircle = OA

when folded, the radius will form the slant height of the cone and the circumference of the semicircle is equal to that of the circumference of cone.

Hence, It can also be said,

OA = Half circumference of the base of the cone.

The slant height is the shortest possible distance between the base and apex of the cone.

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