You can put this solution on YOUR website!
I guess you need to find the area of sectors of circle...
sectors of circle are similar to "pizza pie slices" of a circle...:-)...
the area of semi-circle....(half of circle = half of area)
the area of quarter-circle.....(1/4 of circle = 1/4 of area)
the area of any sector.........(fractional part of the area)
..........where is the number of degrees in the central angle of the sector
