Answer:
[tex]b=\frac{2A}{h}[/tex]
Step-by-step explanation:
∵ Area of a triangle,
[tex]A=\frac{1}{2} bh---(1)[/tex]
Where,
b = base of the triangle,
h = height of the triangle,
For finding the formula for b we need to isolate b in equation (1),
For this divide both sides by [tex]\frac{1}{2}h[/tex]
We get,
[tex]\frac{A}{\frac{1}{2}h}=b[/tex]
[tex]\frac{2A}{h}=b[/tex]
Hence, SECOND option is correct.