Asked by Conco

I really need a quick answer
A sector of a circle of radius 7cm subtending an angle 270 degree at the centre of the circle is used to form a cone

Answers

Answered by oobleck
for the cone, the base circumference is 3/4 the circumference of the circle.
so, its base radius is also 3/4 the radius of the circle.
The slant height of the cone is the radius of the circle.

See what you can do with that, since you didn't actually ask a question.
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