If in the figure below, angle XYZ = 90° and the length of the arc XZ = 10π, then the area of the sector XYZ is
Y is the centre of the circle. Let r be the radius of the circle.
Length of arc XZ = ¼ × 2?r = 10?
r = 20
Arc of sector XYZ = ¼ × ?r2 = 100?
The correct option is C.