Volume of a Prism *** area x length
Volume of a Pyramid *** 1/3 x (base area) x height
Length of an arc *** y/360 pi x d
Area of a sector *** Y/360 x pi x r squared
Circumference of a circle *** Pi x diameter
Volume of a cone *** 1/3 x pi x r squared x height
Volume of a sphere *** 4/3 x pi x r cubed
Volume of a cylinder *** Pi x r squared x height
Percentage profit/loss *** Actual over original x 100
Average speed *** Total distance over total time
Length of a straight line *** Square root of (X2-X1) squared + (Y2-Y1) squared
Area of a parallelogram *** Length of the base X the perpendicular height
Surface area of a cone *** Pi x r x slant height (+ pi r squared)
Surface area of a hemisphere *** 2 x pi x r squared (+ pi r squared)
Surface area of a cylinder *** 2x pi x r squared (+ 2x pi x r x h)
Surface area of a sphere *** 4 x pi x r squared
Density *** Mass over Volume