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# Formulas

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### Formulas

1. 1. Formulas
2. 2. Definition: <ul><li>A general mathematical statement, equation, or rule. </li></ul>
3. 3. Working w/ formulas <ul><li>Formulas are frequently needed for word problems. </li></ul>
4. 4. Working w/ formulas <ul><li>Often formulas are given. </li></ul>
5. 5. Formulas to know <ul><li>Perimeter </li></ul><ul><li>Area </li></ul><ul><li>Volume </li></ul>
6. 6. Perimeter <ul><li>P=Sum of all the sides </li></ul><ul><li>P=2 r (circle) </li></ul>
7. 7. Area <ul><li>A = lw (rectangle) </li></ul><ul><li>A = ½lw (triangle) </li></ul><ul><li>A= r 2 (circle) </li></ul>
8. 8. Volume <ul><li>V=lwh (rectangular prisms) </li></ul><ul><li>V=Bh (other prisms) </li></ul>