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Alex787 [66]
2 years ago
14

Find the total surface area of this cone.

Mathematics
1 answer:
Mama L [17]2 years ago
3 0

Answer:

SA = 70\pi

Step-by-step explanation:

Given

See attachment for cone

Required

The total surface area

This is calculated as:

SA = \pi r\² + \pi rl

From the attached cone:

r = 5 -- radius

l = 9 --- slant height

So, we have:

SA = \pi * 5^2 + \pi * 5*9

SA = 25\pi + 45\pi

SA = 70\pi

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