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OpenStudy (anonymous):
what is the area of a circle that has a diameter of 26 cm?
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OpenStudy (phi):
What is the radius of a circle with a diameter of 26 cm? Can you square the radius by multiplying it by itself? that would give you r^2 pi*r^2 is the area of a circle. So multiply r^2 by pi. or just write down pi*r^2 where you replace r^2 with a number
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