# 11 19 22 triangle

### Obtuse scalene triangle.

Sides: a = 11   b = 19   c = 22

Area: T = 104.4998803821
Perimeter: p = 52
Semiperimeter: s = 26

Angle ∠ A = α = 309.9996213473° = 29°59'59″ = 0.52435921669 rad
Angle ∠ B = β = 59.7266235121° = 59°43'34″ = 1.04224194527 rad
Angle ∠ C = γ = 90.27441435317° = 90°16'27″ = 1.5765581034 rad

Height: ha = 198.9997825129
Height: hb = 110.9998740864
Height: hc = 9.54998912564

Median: ma = 19.80553023203
Median: mb = 14.56988022843
Median: mc = 10.95444511501

Inradius: r = 4.01991847623
Circumradius: R = 111.000125915

Vertex coordinates: A[22; 0] B[0; 0] C[5.54554545455; 9.54998912564]
Centroid: CG[9.18218181818; 3.16766304188]
Coordinates of the circumscribed circle: U[11; -0.05326321814]
Coordinates of the inscribed circle: I[7; 4.01991847623]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 1500.000378653° = 150°1″ = 0.52435921669 rad
∠ B' = β' = 120.2743764879° = 120°16'26″ = 1.04224194527 rad
∠ C' = γ' = 89.72658564683° = 89°43'33″ = 1.5765581034 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.