Answer:
[tex]h=\frac{2A}{b}[/tex]
Step-by-step explanation:
[tex]A=\frac{1}{2}bh[/tex]
Switch sides:
[tex]\frac{1}{2}bh=A[/tex]
Multiply both sides by 2:
[tex]2\cdot \frac{1}{2}bh=2A[/tex]
[tex]bh=2A[/tex]
Divide both sides by b:
[tex]\frac{hb}{b}=\frac{2A}{b}[/tex]
[tex]h=\frac{2A}{b}[/tex]