Question

#20, what is this answer ?

Answer 1

b = 2A/h

b = 6 inches

Explanation:

`A = (1)/(2) bh \\ \\ 2A =bh \\ \\ \purple{b = (2A)/(h)} \\ \\ plug \: A = 12 \: and \: h = 4 \\ \\ b = \frac{2 * \cancel{12}}{ \cancel4} \\ \\ b = 2 * 3 \\ \\ b \: = 6 \: in`