Problem:
A triangle has sides $13, 14, 7$. Determine the area, circumradius, inradius, and semiperimeter of the triangle.
Answer:
Semiperimeter: $17$ 
Area: $2 \sqrt{510}$ 
Circumradius: $\frac{637}{4 \sqrt{510}}$ 
Inradius: $2 \sqrt{\frac{30}{17}}$
{'source': 'AMPS', 'file': 'amps/mathematica/geometry/triangles/35760.txt'}