Quizlet Honors Geometry -- Formulas

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  1. any regular polygon area: 1/2(ap)
  2. circle area: pi*r^2
  3. circumference: diameter*pi
  4. how to find cubic root: put number to the (1/3) power
  5. how to find edges: (F+V)-2=E
  6. parallelogram area: bh
  7. pythagorean theorem: a^2+b^2=c^2
  8. ratio: what to do w/ area: find square roots of both numbers after reducing
  9. ratio: what to do w/ volume: find cubic roots of both numbers after reducing
  10. rectangle area: bh
  11. rhombus area: bh
  12. sphere: (4/3)pi*r^3
  13. surface area of a cylinder: (2pi*rh)+(2pi*r^2)
  14. surface area of a pyramid: (1/2)pl+b
  15. surface area of cone: pi*r*l+pi*r^2
  16. surface area of prism: ph+2b
  17. surface area of sphere: 4pi*r^2
  18. total degree formula: 180(n-2)(1/2)
  19. trapezoid area: h(b+b)*(1/2)
  20. triangle area: (bh)/2
  21. volume of cone: 1/3pi*r^2h
  22. volume of cylinder: pi*r^2*h
  23. volume of prism: bh
  24. volume of pyramid: 1/3bh