# 18.7 27.33 16.1 triangle

### Obtuse scalene triangle.

Sides: a = 18.7   b = 27.33   c = 16.1

Area: T = 146.5276576592
Perimeter: p = 62.13
Semiperimeter: s = 31.065

Angle ∠ A = α = 41.76598731554° = 41°45'36″ = 0.72988472818 rad
Angle ∠ B = β = 103.2521776878° = 103°15'6″ = 1.80220834651 rad
Angle ∠ C = γ = 34.98883499669° = 34°59'18″ = 0.61106619068 rad

Height: ha = 15.67112916141
Height: hb = 10.7232764478
Height: hc = 18.2022059204

Median: ma = 20.38774213671
Median: mb = 10.85497822559
Median: mc = 21.98987914629

Inradius: r = 4.71767737516
Circumradius: R = 14.03988236922

Vertex coordinates: A[16.1; 0] B[0; 0] C[-4.28766118012; 18.2022059204]
Centroid: CG[3.93877960663; 6.0677353068]
Coordinates of the circumscribed circle: U[8.05; 11.50215681827]
Coordinates of the inscribed circle: I[3.735; 4.71767737516]

Exterior(or external, outer) angles of the triangle:
∠ A' = α' = 138.2440126845° = 138°14'24″ = 0.72988472818 rad
∠ B' = β' = 76.74882231223° = 76°44'54″ = 1.80220834651 rad
∠ C' = γ' = 145.0121650033° = 145°42″ = 0.61106619068 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:

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