If the radius of the base of a solid cone is 'r' and its slant height is 1 then what is its lateral surface area?

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B. Com. (Hons.), B. Ed.

Lateral surface area of cone=πrl Since l=1 LSA=πr1 => LSA = πr unit square
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Mathematics Professor

Lateral surface area of cone=πrl =π×r×1 πr
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Pie r unit^2
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Maths Trainer with 23 years of experience

Radius = r slant height=l=1 So, lateral surface area of cone=πrl =πrX1 =πr
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Tutor

Lateral surface area=π×r×l Given l=1 LSR= πr
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