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OpenStudy (anonymous):
Prove the surface area of a cone with base radius R and a slant height of L is given by PiRL
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OpenStudy (anonymous):
Integral calculus: the solid formed by revolving height l and width pi r
OpenStudy (anonymous):
No that would give volume. May be double or triple integrals.
OpenStudy (anonymous):
Non-calculus method: cut the cone open and spread the surface into a rectangle, multiply height l by width pi r = surface area.
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