Area of a circle inscribe a hexagon. Cut the hexagon into six triangles by splitting it from the center. Two opposite triangles both touch two common diameters; slide them along one so the radial edges are adjacent. They now form a parallelogram, with the hexagon sides making two opposite edges, one of which is the base, "s". Two radial edges form slanted sides, and the height, "h" is equal to its apothem (as in the Archimedes proof). In fact, we can assemble all the triangles into one big parallelogram by putting successive pairs next to each other. The same is true if we increase
A Plane Is Born packed programme sees major progress on the plane with the rudder assembly completed and the fuselage top on and finally bonded. Back at Staverton, Mark learns how to talk - important for a presenter but vital for a pilot as he masters the rudiments of radio communication. In another look at other kit-planes, we meet fellow Europa constructor Peter Kember who was the first ever to home-build a Europa Kit. - All Revved Up It's a red-letter day down at the workshop as the brand new engine arrives with Europa's Andy Draper. Mark takes on the delicate task of fitting