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Lemur [1.5K]
2 years ago
11

What is the surface area of this right circular cone? (plsss help lol 20 points)

Mathematics
1 answer:
SIZIF [17.4K]2 years ago
3 0

Answer:

B.

Step-by-step explanation:

Surface area = πr(r + L)   where r = radius of the base and L = the slant height.

= 12π(12 + 40)

= 12*52π

= 624π.

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