11.6 Area of Circles Flashcards
1
Q
sector of a circle
A
the region bounded by two radii of the circle and their intercepted arc
2
Q
area of a sector thm
A
area of a sector= mAB/360*Acircle
*notice the area of a sector is just a fraction of the area of the whole circle
3
Q
segment of a circle
A
a region bounded by a chord and its intercepted arc
4
Q
“FORMULA” for segments of circles
A
area of a minor segment= (area of sector) - (area of triangle)
5
Q
area of a circle thm
A
A=(pi)r^2
