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Curved Surface Area & Total Surface Area of Cone

What is the b...

Question

What is the base-radius and slant height of the cone made by rolling up a sector of radius 10 centimetres and central angle 60°?

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Solution

Given: Central angle of the sector = 60°

Radius of the sector = 10 cm

Slant height of the cone = Radius of the sector = 10 cm

Central angle of the sector is 60°, which is

Base radius of the small circle = of the radius of the larger circle

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