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OpenStudy (anonymous):
what is the circumference of a circle with diameter of 7cm?
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OpenStudy (anonymous):
u know it
OpenStudy (anonymous):
circumference=2 pie r radius=diameter/2
OpenStudy (anonymous):
so 21.98?
OpenStudy (anonymous):
\[7\pi =21.99 \text{ cm} \]
OpenStudy (anonymous):
its not showing what you put
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OpenStudy (anonymous):
The ratio of the a circle's circumference to it's diameter is Pi.\[\frac{c}{d}= \pi , \pi d = c \]
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