The coefficient of b is h/2. Multiply the equation by the reciprocal of that.
(2/h)A = (2/h)·(h/2)·b
b = 2A/h . . . . . simplify
The answer is 500 seconds it’s 5.33 minutes.
5.7 square feet = 0.53 square meters
0.53 / 0.75 = 0.71
the smallest would be a)0.71
