Formulas Flashcards
1
Q
formula for arc length
A
s=(pi)r*/180 degrees *= the angular measure of the arc in radians
2
Q
area of a sector
A
A = r^2/2 - in radians OR A=(pi)r^2/360 in degrees
3
Q
circumferance
A
C=2(pi)r
4
Q
area of triangle
A
A=1/2bh
5
Q
area of parallelogram
A
A=bh
6
Q
area of trapezoid
A
A=1/2 h (b1+b2)
7
Q
area of circle
A
A=(pi)r^2
8
Q
surface area of prism
A
SA = 2B +Ph
9
Q
volume of a prism
A
V=Bh
10
Q
surface area of a sphere
A
A=4(pi)r^2
11
Q
Volume of sphere
A
V = 4/3 (pi) r^3
12
Q
surface area of a cylinder
A
SA = 2 (pi) r^2 + 2 (pi) r h
13
Q
volume of cylinder
A
V = (pi) r^2 h
14
Q
how many cm in an inch
A
2.54
15
Q
how many meters in ft
A
0.305
