Find the area of a segment AYB if radius of a circle is 21cm angle AOB is equal to 120degree.
I do not know what your problem looks like.
To find the area of segment AYB, we need to know the measure of angle AYB, i.e., the central angle that subtends the segment. However, it is not given in the question.
To calculate the area of a segment, we need the measure of the central angle and the radius of the circle. But in this case, we only have the radius (21 cm) and the measure of angle AOB (120 degrees).
Therefore, without the measure of angle AYB, we cannot determine the area of segment AYB.