Formulas Flashcards
Area of rectangle
A = b * h
Area of triangle
A = 1/2bh
Area of circle
A=πr^2
Volume of sphere
V=4/3πr^3
Volume of a rectangular prism
V = width * height * length
Area of a trapezoid
a = (a+b/2)h
Circumference
C = 2πr
Rotate 180 degrees about the origin
(x,y)→(−x,−y)
Rotate 90 degrees about the origin
(x,y)→(−y,x)
Rotate 270 degrees about the origin
(x,y)→(y,−x)
sin
opp/hyp
cos
adj/hyp
tan
opp/adj
Draw a 30-60-90 triangle
Draw a 45-45-90 triangle
Height of an equilateral triangle
A = 1/2s√ 3
Area of an equilateral triangle
A = (s^2√ 3) over 4
area of sector of a circle
A = (fraction)(area of circle)
area of segment of a circle
A = (area of sector) - (area of triangle)
length of an arc
(fraction)(circumference)
surface area of a cylinder
2πrh + 2πr^2
surface area of a cone
πrL + πr^2
surface area of a sphere
4πr^2
volume of a prism or cylinder
V = base area * height
