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How do I find out what the fraction is? 90/360 = 1/4. So I have 2πr•90/360 2π•10•1/4 20π•1/4 Where do I go from there?
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How do I find out what the fraction is? 90/360 = 1/4.

So I have
2πr•90/360
2π•10•1/4
20π•1/4
Where do I go from there?

How do I find out what the fraction is? 90/360 = 1/4. So I have 2πr•90/360 2π•10•1/4 20π•1/4 Where-example-1
User Quentin Morrier
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1 Answer

7 votes
Multiply like terms so leave the pi alone so 20 x 1/4 is 5. The answer is 5 pi
User Magicsword
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