Perimeter + Heron's formula - math problems
- Circular railway
The railway is to interconnect in a circular arc the points A, B, and C, whose distances are | AB | = 30 km, AC = 95 km, BC | = 70 km. How long will the track from A to C?
- Trapezoid - hard example
Base of the trapezoid are: 24, 16 cm. Diagonal 22, 26 cm. Calculate its area and perimeter.
Calculate perimeter of the circle described by a triangle with sides 478, 255, 352.
Calculate heights of the triangle ABC if sides of the triangle are a=75, b=84 and c=33.
- Triangle SSS
Calculate perimeter and area of a triangle ABC, if a=42, b=57 and c=42.
See also our trigonometric triangle calculator.