arcs and sectors Flashcards
1
Q
area of a sector:
A
angle / 360 x π x radius ^2
2
Q
arc length of a sector:
A
angle / 360 x 2 x π x radius
3
Q
perimeter of a sector:
A
arc length + 2 x radius
4
Q
area of a circle:
A
π x r ^2
5
Q
circumference of a circle:
A
2 x π x radius