the radius AB of a cicle is 5 centimeter.the distance of a line,CD from the center of the circle is 4 centimetre.how will I get the area of ABCD?

I guess A is at center and AB bisects CD ????

we need to know angle at center

cos (T/2) = 4/5
T/2 = 36.9 degrees
T = 73.7 degrees
so
area = (73.7/360) pi R^2