Question

Solve the area formula for a triangle, A = 1/2bh , for h.

a) $h= \frac{2b}{A}$
b) $h= \frac{2A}{b}$
c) $h= \frac{A}{2b}$
d) $h= \frac{b}{2A}$

Answer 1

$A=\frac{1}{2}bh \ \ \ \ \ \ |\times 2 \\ 2A=bh \ \ \ \ \ \ |\div b \\ \frac{2A}{b}=h \\ h=\frac{2A}{b} \\ \\ \hbox{answer B}$