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TEAS MathematicsArea, perimeter, volume

Key Math FormulasATI TEAS 7 cheat sheet

Area, perimeter, volume

6 key facts Reviewed Oct 2026
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Rectangle

  • Area = length × width
  • Perimeter = 2(length + width)

Triangle / Circle

  • Triangle area = ½ × base × height
  • Circle area = π r² · Circumference = 2 π r

Volume

  • Rectangular box = length × width × height
  • Round to the place asked; keep units (cm², cm³)
Key takeaway

Area, perimeter, volume

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