Pyramid Surface Area
1/2lp+B
Pyramid Volume
1/3Bh
Cone SA
pie r squared+ pie rl
Cone Volume
1/3pie r squared h
Rectangular Prism Volume
lwh
Cylinder Volume
Pie r squared h
Sphere SA
4pie r squared
Sphere Volume
4/3 pie r cubed
Hemisphere Volume
2/3 pie r cubed
Hemisphere SA
3pie r squared
Triangle Area
bh1/2
Trapezoid Area
1/2h(b1+b2)
Circle Area
Pie r squared
Circle Circumference
2pie r
Arc Length
pie r squared • ark/ 360
Equation of a Circle
(X-h) squared + (y-k)squared = r
a•b= c•d
Inside circle
a(a+b)= c(c+d)
Outside Circle
a squared= b(b+c)
Interesting secant and tangent outside the circle
Mid segment of a trapezoid
The average of the top and bottom= the middle
Reflection of the x-axis
(x,-y)
Reflection of the y-axis
(-x,y)
y=x
(y,x)
y=-x
(-y,-x)
Rotation 90
(-y,x)
Rotation 180
(-x,-y)
Rotation 270
(y,-x)
Point Slope Formula
y2-y1=m(x2-x1)
Classifying a Acute Triagle
a squared+ b squared > c squared
Classifying a Right Triangle
a squared+ b squared= right
Classifying a Obtuse Triangle
a squared+ b squared < c squared
Population Formula
Population/ area