# 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. - Described

Calculate perimeter of the circle described by a triangle with sides 478, 255, 352. - Triangle

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.

We apologize, but in this category are not a lot of examples.

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Do you have an interesting mathematical word problem that you can't solve it? Enter it, and we can try to solve it.

See also our trigonometric triangle calculator.