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Mathematics 9 Online
OpenStudy (anonymous):

HELPP !!!

OpenStudy (anonymous):

OpenStudy (anonymous):

need help

OpenStudy (anonymous):

\[C=2 \pi r\]

OpenStudy (anonymous):

And with diameter \[C = \pi d\]

OpenStudy (anonymous):

c= 2(3.14)r??

OpenStudy (anonymous):

Yeah and plug in the values they gave you for r and d.

OpenStudy (anonymous):

theres only a 8

OpenStudy (anonymous):

Yeah that's for your first question, that's the radius of a circle.

OpenStudy (anonymous):

|dw:1407314837539:dw|

OpenStudy (anonymous):

so the radius is 6.28?

OpenStudy (anonymous):

|dw:1407314855321:dw|

OpenStudy (anonymous):

No the radius is 8.

OpenStudy (anonymous):

50.38??

OpenStudy (anonymous):

Yes!

OpenStudy (anonymous):

Now the next circle has a diameter! Diameter is basically 2*r

OpenStudy (anonymous):

that would be the answer??

OpenStudy (anonymous):

100.48

OpenStudy (anonymous):

The first question your answer is 50.24.

OpenStudy (anonymous):

The second you should get 75.36

OpenStudy (anonymous):

theres only question though??

OpenStudy (anonymous):

What?

OpenStudy (anonymous):

im confused whats the answer for number 69

OpenStudy (anonymous):

To get the circumference of a circle you use this formula; \[C =2 \pi r\]

OpenStudy (midhun.madhu1987):

|dw:1407315067626:dw|

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