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AnnZ [28]
2 years ago
14

Need help asap The answer is 100 or 126​

Mathematics
1 answer:
Serga [27]2 years ago
6 0

Answer:

The surface area of the cone is 126π cm².

Step-by-step explanation:

The surface area of a cone can be found using this formula:

  • \text{SA} = \pi r ^2+\pi r l
  • where r = radius and l = slant height

In this problem, we are told that the cone has a radius of 9 cm and a slant height of 5 cm.

Substitute these values into the formula for the surface area of a cone.

  • \text{SA}= \pi (9)^2+ \pi(9)(5)\\
  • \text{SA}= \pi (81)+ \pi(45)
  • \text{SA}= 126 \pi

The surface area of the right cone is 126 π cm².

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Step-by-step explanation:

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