# 14 25 30 triangle

### Obtuse scalene triangle.

Sides: a = 14   b = 25   c = 30

Area: T = 173.8821964275
Perimeter: p = 69
Semiperimeter: s = 34.5

Angle ∠ A = α = 27.62551660544° = 27°37'31″ = 0.48221501041 rad
Angle ∠ B = β = 55.89547902371° = 55°53'41″ = 0.97655481243 rad
Angle ∠ C = γ = 96.48800437085° = 96°28'48″ = 1.68438944252 rad

Height: ha = 24.84402806107
Height: hb = 13.9110557142
Height: hc = 11.59221309516

Median: ma = 26.71114207784
Median: mb = 19.79326754129
Median: mc = 13.62198384719

Inradius: r = 5.04400569355
Circumradius: R = 15.09664478171

Vertex coordinates: A[30; 0] B[0; 0] C[7.85; 11.59221309516]
Centroid: CG[12.61766666667; 3.86440436505]
Coordinates of the circumscribed circle: U[15; -1.70437419679]
Coordinates of the inscribed circle: I[9.5; 5.04400569355]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 152.3754833946° = 152°22'29″ = 0.48221501041 rad
∠ B' = β' = 124.1055209763° = 124°6'19″ = 0.97655481243 rad
∠ C' = γ' = 83.52199562915° = 83°31'12″ = 1.68438944252 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.