piggysundew
piggysundew
05-03-2017
Mathematics
contestada
SA=πr^2-πr solve for r
Respuesta :
soooobored
soooobored
05-03-2017
a great time to apply the quadratic formula
for a quadratic equation
Ax^2 + Bx +C =0
then
[tex]x= \frac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]
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