Geometry

Geometric Calculators

Area of a Triangle: $A = \frac{1}{2} b h$
Area of a Rectangle: $A = l w$
Area of a Circle: $A = π r^{2}$
Circumference of a Circle: $C = 2 π r$
Area of a Trapezoid: $A = \frac{1}{2} (b_{1} + b_{2}) h$
Volume of a Cube: $V = s^{3}$
Volume of a Sphere: $V = \frac{4}{3} π r^{3}$
Surface Area of a Sphere: $S = 4 π r^{2}$
Volume of a Cylinder: $V = π r^{2} h$
Surface Area of a Cylinder: $S = 2 π r (h + r)$
Volume of a Cone: $V = \frac{1}{3} π r^{2} h$
Surface Area of a Cone: $S = π r (r + l)$
Area of a Parallelogram: $A = b h$
Area of a Rhombus: $A = \frac{1}{2} d_{1} d_{2}$
Area of a Regular Polygon: $A = \frac{1}{2} a p$
Arc Length: $L = r θ$
Sector Area: $A = \frac{1}{2} r^{2} θ$
Law of Sines: $\frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C}$
Law of Cosines: $c^{2} = a^{2} + b^{2} - 2 a b \cos C$
Heron's Formula: $A = \sqrt{s (s - a) (s - b) (s - c)}$ , where $s = \frac{a + b + c}{2}$