Mathway | Geometric Formulas

Area

$Square : A = s^{2} Rectangle : A = l w Parallelogram : A = b h Triangle : A = \frac{1}{2} b h Trapezoid : A = \frac{1}{2} h (b_{1} + b_{2}) Circle : A = π r^{2}$

Perimeter

$Square : P = 4 s Rectangle : P = 2 l + 2 w Triangle : P = s_{1} + s_{2} + s_{3} Circumference of a Circle : C = 2 π r OR C = πd (π = 3.14)$

Surface Area

$Rectangular Prism : S A = 2 l w + 2 l h + 2 w h Right Prism : S A = p h + 2 B Cylinder : S A = 2 π r h + 2 π r^{2} Pyramid : S A = \frac{1}{2} p s + B Cone : S A = π r s + π r^{2} Sphere : S A = 4 π r^{2} (p = perimeter of base with area B; π = 3.14)$

Volume

$Rectangular Prism : V = l w h Right Prism : V = B h Cylinder : V = π r^{2} h Pyramid : V = \frac{1}{3} B h Cone : V = \frac{1}{3} r^{2} h Sphere : V = \frac{4}{3} π r^{3} (p = perimeter of base with area B; π = 3.14)$