What is the height of the trapezoid if the area is 0.2128 in, the bases are 5.3 in + 9.9 in?

Formula for area of trapezoid is 1/2 (h) (base1 + base2) = area Enter the info you already are given:

1/2 (h) (5.3 + 9.9) = 0.2128

Solve for h:

1/2 (h) (15.2) = 0.2128

1/2 (h) = 0.014

h = 0.028

The height is 0.028 inches.