Q: What is the formula for the surface area of a cone?

A A = pi * r²
B A = pi * r * h
C A = pi * r² + pi * r * h
D A = pi * r * (r + h)

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Answer: D

Explanation:

The formula for the surface area of a cone is A = pi * r * (r + h), where r is the radius of the base and h is the height of the cone. The term pi * r * (r + h) represents the lateral surface area of the cone, which is the area of a sector of the base multiplied by the slant height of the cone.

r²

Volume and Surface Area

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Q: What is the formula for the surface area of a cone?

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