# Triangle calculator SSS - result

Please enter the triangle sides:

### Acute scalene triangle.

Sides: a = 311.26   b = 140   c = 278

Area: T = 194609.9999976
Perimeter: p = 729.26
Semiperimeter: s = 364.63

Angle ∠ A = α = 89.99991075873° = 89°59'57″ = 1.57107807513 rad
Angle ∠ B = β = 26.73298743053° = 26°43'48″ = 0.46765243153 rad
Angle ∠ C = γ = 63.27110181074° = 63°16'16″ = 1.10442875871 rad

Height: ha = 125.0440159337
Height: hb = 2787.999999966
Height: hc = 1409.999999983

Median: ma = 155.6321947556
Median: mb = 286.6766461887
Median: mc = 197.2832522794

Inradius: r = 53.36991687399
Circumradius: R = 155.6330000019

Vertex coordinates: A[278; 0] B[0; 0] C[277.9987819424; 1409.999999983]
Centroid: CG[185.3332606475; 46.6676666661]
Coordinates of the circumscribed circle: U[139; 69.99878350085]
Coordinates of the inscribed circle: I[224.63; 53.36991687399]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 90.00108924127° = 90°3″ = 1.57107807513 rad
∠ B' = β' = 153.2770125695° = 153°16'12″ = 0.46765243153 rad
∠ C' = γ' = 116.7298981893° = 116°43'44″ = 1.10442875871 rad

# How did we calculate this triangle?

### 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.