Question 414322

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)


{{{A=(1/2)(pi)r^2}}}

the area of quarter-circle.....(1/4 of circle = 1/4 of area)

{{{A=(1/4)(pi)r^2}}}

the area of any sector.........(fractional part of the area) 


{{{A=(n/360)(pi)r^2}}}..........where {{{n}}} is the number of degrees in the central angle of the sector