circles question

cutting a circle into equal sector of a small central angle to find the area of circle by using the formula πr^2
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????????? "kutting equal sekter" ?????????... ??? perhaps yu thank about get area av serkel bi integrate bunch av... small sekters... if small nuf, assume sekter=isosaleez triangel, 2 sides=radius... & approximate ark bi strate line=other side av triangel... area av 1 trinagel=radius* (halv av triangel base)... for small angels, base leng=r* senter angel, in RADIANS... area av 1 triangel=radius*(radius*angel)/2 sum all triangels & yu get... radius*radius*(360deg/2)... but 360 deg=2pi radians, so area=pi*radius*radius
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