anonymous
  • anonymous
Fan & Medal What is the surface area? http://static.k12.com/eli/bb/817/-1/0/2_36869_44974/-1/5c45df68fdad740c9f94d22ea5f92dd60c7a03f7/media/7e029ea22c7d7523591ecd9f4f977f59e4b10892/mediaasset_651527_1.jpg
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
is it 50.80 m^2
mathmate
  • mathmate
|dw:1438736864958:dw| Lateral area of a cone is \(A_L =\pi r l=\pi (2.1)(5.6)~m^2 \) If total surface area is required, add area of base, \(A_b =\pi r^2 = \pi 2.1^2 ~m^2 \)

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mathmate
  • mathmate
Yes, your answer is correct. The total surface area is 36.95+13.85=50.80 m^2
anonymous
  • anonymous
ok ..thanks . i just needed justification
mathmate
  • mathmate
You're welcome! :) For justification, I have already given the formulas. Also, I verified your number to be correct.
anonymous
  • anonymous
lol. i know i was saying thanks for the justification
mathmate
  • mathmate
Good! :)

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