The magnitude of the force (in Newton) acting on a body varies with time t (in milliseconds) as shown in the figure. AB, BC and CD are straight line segments. The magnitude of the total impulse of the force on the body from t = 4 ms to t= 16 ms is ____ Ns.

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The magnitude of the total impulse of the force on the body form t = 4 µs to t = 16 µs = Area EBCD
= Area of trapezium EBCFE + Area of CFD