Answer:
19 cm
Step-by-step explanation:
The formula for the area of a trapezoid is
A = ½(a+b)h
Data:
A = 96 cm²
h = 6 cm
a = 13 cm
Calculation:
96 = ½(13 + b) × 6
96 = 3(13 + b)
96 = 39 + 3b
57 = 3b
b = 19 cm
The other base of the trapezoid is 19 cm long.