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OpenStudy (anonymous):
Make: "r" the subject of A = pi r^2 (that is "pi" times "r^2)
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OpenStudy (angela210793):
A = pi r^2 : pi both sides A/pi=r^2(sqr both sides r=sqr(A/pi)
OpenStudy (anonymous):
Looks good, thank you.
OpenStudy (angela210793):
uw :)
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