# BoulderArtsAndMaths27.frink

``` // Solution to "Boulder Arts & Maths 27" Geocaching puzzle // http://www.geocaching.com/seek/cache_details.aspx?guid=33f820d4-8bca-4e71-b4ff-40978968c94f // Include the important definitions for many of these functions. use navigation.frink // Wind gauge lat1  = DMS[39, 59.194] North long1 = DMS[105, 11.398] West // Giant Robot!! lat2  = DMS[40, 00.878] North long2 = DMS[105, 12.453] West // DNA lat3 = DMS[40, 02.056] North long3 = DMS[105, 14.062] West // Build a polygon of points array = [[lat1, long1], [lat2, long2], [lat3, long3]] perim = earthPerimeter[array] println["Perimeter is " + (perim -> "statute miles")] println["Area is " + (earthArea[array] -> "(statute miles)^2")] println["Verifying against flat earth: "] s = perim/2 // Ye olde (Euclidean) triangle area formula area = sqrt[s (s - earthDistance[lat1, long1, lat2, long2]) * (s - earthDistance[lat2, long2, lat3, long3]) * (s - earthDistance[lat3, long3, lat1, long1])] println["Flat-earth area is " + (area -> "(statute miles)^2")] ```

This is a program written in the programming language Frink.
For more information, view the Frink Documentation or see More Sample Frink Programs.

Alan Eliasen was born 19354 days, 4 hours, 54 minutes ago.