choices701 choices701
  • 26-10-2016
  • Mathematics
contestada

Solve: A = 4pir2 for r.

Respuesta :

musicsword123 musicsword123
  • 26-10-2016
 r means radius so it can't be negative. 

<=> 

A = 4 pi r² 

r = sqr (A / 4pi) 
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