What is an area of a circle bounded by two radii?

Answer 1

Working in degrees, the angle of the greater radius, minus the lesser radius, all over 360, gives the proportion of the area of the circle that is bounded by the radii. This can then be multiplied by the area of the whole circle to give the bounded area.

Answer 2

the largest area within the circel bounded by the arc and a chord wich termenate at the same points at the circle