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Large networks of pipes, cables and power lines are obviously of great importance. Whilst small percentage errors may not appear to be large they will have a significant impact on the cost of large engineering projects, such as laying a new oil pipeline. Fuel costings for international travel provide other applications of these results.
Spherical Triangles on Very Big Spheres
Age 16 to 18
Challenge Level 
Large networks of pipes, cables and power lines are obviously of great importance. Whilst small percentage errors may not appear to be large they will have a significant impact on the cost of large engineering projects, such as laying a new oil pipeline. Fuel costings for international travel provide other applications of these results.
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