Geometric Formulas
ThatQuiz
Area
Rectangle : a = w·h
Parallelogram : a = w·h
Rhombus : a = w·h/2
Triangle : a = (1/2)b·h
Circle : a = πr2
Trapezoid : a = h·(b1+b2)/2

Perimeter
Rectangle : p = 2(w+h)
Parallelogram : p = 2(w+h)
Triangle : p = a+b+c
Circle : c = 2πr  [circumference]
Trapezoid : p = a+b+c+d
Rhombus : p = a+b+c+d

Surface Area
Cube : a = 6w2
Prism : a = 2w·d+2d·h+2w·h
Pyramid : a = d·w+d(w/2)2+h2+w(d/2)2+h2
Sphere : a = 4πr2
Cylinder : a = 2π(r2+r·h)
Cone : a = πr(r+r2+h2)

Volume
Cube : v = w3
Prism : v = w·d·h
Pyramid : v = w·d·h/3
Sphere : v = (4/3)πr3
Cylinder : v = πr2h
Cone : v = (1/3)πr2h