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OpenStudy (anonymous):
Find the surface area of the ball. Leave the answer in terms of pi d = 24 cm @Directrix
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Directrix (directrix):
A = 4 * π * 12²
OpenStudy (anonymous):
1808?
Directrix (directrix):
This has to be in terms of pi. Look at the question.
Directrix (directrix):
Did you get 576π
OpenStudy (anonymous):
no i dont know what you mean by it has to be in terms of pi
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Directrix (directrix):
The answer has a pi in it. 576π is an answer in terms of pi.
OpenStudy (anonymous):
so you dont multiply the pi
Directrix (directrix):
No. You did in your answer: 1808 divided by 3.14 = 575.796178344 pi which is 576 pi in terms of pi.
OpenStudy (anonymous):
oh ok i get it now
Directrix (directrix):
Good. Ready for the next question?
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OpenStudy (anonymous):
absolutely
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