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trinityroberts4 trinityroberts4
  • 13-12-2014
  • Mathematics
Answered

The radius of a circular sign is decreased by 4 inches. If r represents the radius of the original sign, which equation represents the area, in square inches, of the smaller sign?

Verified Answer :

mrudzki mrudzki
  • 13-12-2014

\(Area\ of\ the\ circle:\\A=\pi r^2\\\\then\ the\ expression\ presenting\ the\ smaller\ a\ reairs:\\\\(r-4)^2\pi\)

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