Answer:
A. [tex]h=\dfrac{2A}{b}[/tex]
Step-by-step explanation:
You are given formula
[tex]A=\dfrac{1}{2}bh[/tex]
Multiply this equation by 2 to get rid of fraction:
[tex]2A=bh[/tex]
Divide this equation by b to find h in terms of A and b:
[tex]h=\dfrac{2A}{b}[/tex]
