If a sector is converted into a cone by joining its two bounding radii then which of following statements are correct?

Radius of sector of circle is equal to radius of cone

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Length of arc of sector is equal to circumference

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Radius of sector of circle is equal to slant height of a cone

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Area of sector of circle is equal to curved surface area of cone

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Solution

The correct options are
B Length of arc of sector is equal to circumference
C Radius of sector of circle is equal to slant height of a cone
D Area of sector of circle is equal to curved surface area of cone
R.E.F image
$l = 2 π r = C . S . A o f c o n e = s e c t o r a r e a$

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