How do you solve word problems involving formulas?

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Answer 1 · 2015-09-20T13:23:41

By reading.

The way you interpret the problem is the start, let me give you an example:

Triangle "1" Has 3 sides, $A$ , $B$ , and $C$ . $A$ Is equal to $3$ , $B$ is equal to $4$ . Find $C$ .

Using Pythagoras' Theorem, we know $A^2 + B^2 = C^2$

$A^2 = 9$ , $B^2 = 16 implies A^2 + B^2 = 9 + 16 = 25$

SInce $C^2 = A^2 + B^2 = 25$ , you know that

$C = sqrt(C^2) = sqrt(25) = 5$

You simply find out what value goes with what part of the formula, and do this for each, and then work out the formula as normal.