anonymous
  • anonymous
12.) Find the volume of the cylinder in terms of pi.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
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anonymous
  • anonymous
my answer: 54 pi in. ^3. Is that correct?
anonymous
  • anonymous
19.) A spherical balloon has a circumference of 23 cm. What is the approximate surface area of the balloon to the nearest square centimeter? my answer: 674 cm^2. Is that correct?

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anonymous
  • anonymous
Your first answer is correct. Well done.
anonymous
  • anonymous
Thank you.
anonymous
  • anonymous
For the second question, circumference is given by\[C = 2 \times \pi \times r\]Rearranging, you can determine the radius using\[r = \frac{ C }{ 2\pi } \]With the radius known, the surface area of a sphere is calculated using\[SA _{\text{sphere}} = 4\pi r^2\]
anonymous
  • anonymous
I do not get the same answer as you did for the second question.
anonymous
  • anonymous
@Loser66 is the answer
anonymous
  • anonymous
415 cm^2
anonymous
  • anonymous
Did you determine the radius?
anonymous
  • anonymous
would the answer be in the thousands?
anonymous
  • anonymous
The answer I get is smaller that either of your earlier answers. Can you explain how you arrived at these answers?
anonymous
  • anonymous
Oh, I am sorry. its 168 cm^2
anonymous
  • anonymous
Correct. Good job!

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