Reference sheet
The same formulas provided in the Digital SAT Math section.
Circle
Area = πr²
Circumference = 2πr
Rectangle / Triangle
Rectangle area = ℓw
Triangle area = ½bh
Right triangle
c² = a² + b²
30-60-90 → x, x√3, 2x
45-45-90 → x, x, x√2
Solids
Box = ℓwh
Cylinder = πr²h
Sphere = (4/3)πr³
Cone / Pyramid
Cone = (1/3)πr²h
Pyramid = (1/3)ℓwh
Facts
Degrees in a circle = 360
Radians in a circle = 2π
Angles in a triangle = 180
Desmos graphing calculator