Circular railway
The railway connects points A, B, and C in a circular arc, whose distances are | AB | = 30 km, AC = 95 km, and BC | = 70 km. How long will the track be from A to C?
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- algebra
- expression of a variable from the formula
- planimetrics
- circle
- area of a shape
- perimeter
- triangle
- The Law of Cosines
- Heron's formula
- basic functions
- reason
- goniometry and trigonometry
- arccosine
Units of physical quantities:
Grade of the word problem:
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