Determine the total displacement of the object(as the area under the velocity vs. time graph line )

Area from t= 0 to t = 6:
A = b*h/2
Where:
b= 6
h = 9
A = 9*6/2 = 27
Area from t=6 to t=10
A= w*h
Where:
w = 4
h = 9
A = 4*9 = 36
The total area is:
Area total = Total displacement = 27 + 36 = 63m