# Chapter 1, Equations and Inequalities - 1.4 Rewrite Formulas and Equations - Guided Practice for Example 2 - Page 27: 6

See below.

#### Work Step by Step

$A=0.5bh\\b=\frac{2A}{h}$ Thus plugging in $A=9,h=3$: $b=\frac{2(9)}{3}=6$

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