# 14 22 30 triangle

### Obtuse scalene triangle.

Sides: a = 14   b = 22   c = 30

Area: T = 143.8443665137
Perimeter: p = 66
Semiperimeter: s = 33

Angle ∠ A = α = 25.84219327632° = 25°50'31″ = 0.45110268118 rad
Angle ∠ B = β = 43.23332348092° = 43°14' = 0.75545622937 rad
Angle ∠ C = γ = 110.9254832428° = 110°55'29″ = 1.93660035481 rad

Height: ha = 20.54990950195
Height: hb = 13.07766968306
Height: hc = 9.59895776758

Median: ma = 25.35774446662
Median: mb = 20.66439783198
Median: mc = 10.72438052948

Inradius: r = 4.35988989435
Circumradius: R = 16.05991013709

Vertex coordinates: A[30; 0] B[0; 0] C[10.2; 9.59895776758]
Centroid: CG[13.4; 3.19765258919]
Coordinates of the circumscribed circle: U[15; -5.73553933468]
Coordinates of the inscribed circle: I[11; 4.35988989435]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 154.1588067237° = 154°9'29″ = 0.45110268118 rad
∠ B' = β' = 136.7676765191° = 136°46' = 0.75545622937 rad
∠ C' = γ' = 69.07551675724° = 69°4'31″ = 1.93660035481 rad

# How did we calculate this triangle?

Now we know the lengths of all three sides of the triangle and the triangle is uniquely determined. Next we calculate another its characteristics - same procedure as calculation of the triangle from the known three sides SSS. ### 1. The triangle circumference is the sum of the lengths of its three sides ### 2. Semiperimeter of the triangle ### 3. The triangle area using Heron's formula ### 4. Calculate the heights of the triangle from its area. ### 5. Calculation of the inner angles of the triangle using a Law of Cosines ### 6. Inradius ### 7. Circumradius ### 8. Calculation of medians #### Look also our friend's collection of math examples and problems:

See more informations about triangles or more information about solving triangles.