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Mathematics 19 Online
OpenStudy (gabbyalicorn):

What is the approximate perimeter of the figure? A. 18.8 cm B. 10.71 cm C. 7.7 cm D. 4.71 cm

OpenStudy (gabbyalicorn):

OpenStudy (gabbyalicorn):

I don't know how to do this problem ;-;

OpenStudy (gabbyalicorn):

@MonKiwi

OpenStudy (johnweldon1993):

Hint* Perimeter of a circle = the circumference! \[\large C = 2\pi r\]

OpenStudy (gabbyalicorn):

B

OpenStudy (gabbyalicorn):

no A

OpenStudy (gabbyalicorn):

srry my typo mistake

OpenStudy (johnweldon1993):

So if we plug in the radius we would get the circumference for an ENTIRE circle of radius 3 And yes that WOULD be 18.8....however, notice we only have a quarter of a circle..so we need to divide this number by 4

OpenStudy (gabbyalicorn):

4.7

OpenStudy (johnweldon1993):

And that would be your answer!

OpenStudy (gabbyalicorn):

Yay! Thank you! √

OpenStudy (johnweldon1993):

No problem!

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