The measure of central angle xyz is 1.25 radians.

what is the area of the shaded sector?

We are given with the angle of the central angle of 1.25 radians and the radius of the circle equal to 8 units. in this case, converting 1.25 radians to degrees ( 1.25 radians * (180 deg/3.14 rad)) = 71.66 deg. the formula to be used is A = 1/2 r^2 theta where theta is 1.25 rad. substituting,A = 5 unit^2