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OpenStudy (anonymous):
use the illustration below to calculate the circumfrence of the circle.
A. 75.4 cm
B. 24 cm
C. 37.7 cm
D. 452.4 cm
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OpenStudy (anonymous):
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OpenStudy (anonymous):
what is the equation for circumference?
OpenStudy (anonymous):
their is no equation
OpenStudy (anonymous):
The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.
OpenStudy (anonymous):
If a circle has a diameter of 4, its circumference is 3.14*4=12.56
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OpenStudy (anonymous):
If you know the radius, the diameter is twice as large.
OpenStudy (anonymous):
You have enough info @katlin95 to work it out on your own for once :)
OpenStudy (anonymous):
its B
OpenStudy (anonymous):
is that the right answer guys?
OpenStudy (anonymous):
Circumference = 2 • π • radius = π • diameter
Circle Area = π • r² = ¼ • π • d²
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OpenStudy (anonymous):
yea its B
OpenStudy (anonymous):
nevermind its C
OpenStudy (anonymous):
A. 75.4 cm
OpenStudy (anonymous):
A
OpenStudy (anonymous):
they give you 12 cm aka the RADIUS!
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OpenStudy (anonymous):
Circumference = 2 • π • radius = 2 • π • 12 = 75.39 = 75.4
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