Given the following formula, solve for b.
A=1/2bh
A. b = 2Ah
B. b = 2h/A
C. b = A/2h
D. b = 2A/h
$$A=\frac{1}{2}\times bh\\\\ \mbox{multiply both sides by 2}\\ 2A = bh\\ \mbox{divide both sides by h}\\ \frac{2A}{h}=b$$
