Ein Kreis mit r=x Teilen in drei gleiche Kreise mit r=y, deren Summe der Umfänge gleich dem Umfang des Kreises mit r=x ist. Wie groß ist y?
U(x)= 2*x*pi
U(y) = 2*y*pi = $${\frac{{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\times\,}}{\mathtt{\pi}}}{{\mathtt{3}}}}$$
U(x) = 3* U(y) => 2*x*pi = $${\frac{{\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\times\,}}{\mathtt{\pi}}}{{\mathtt{3}}}} = {\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\times\,}}{\mathtt{\pi}}$$
U(x)= 2*x*pi
U(y) = 2*y*pi = $${\frac{{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\times\,}}{\mathtt{\pi}}}{{\mathtt{3}}}}$$
U(x) = 3* U(y) => 2*x*pi = $${\frac{{\mathtt{3}}{\mathtt{\,\times\,}}{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\times\,}}{\mathtt{\pi}}}{{\mathtt{3}}}} = {\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{x}}{\mathtt{\,\times\,}}{\mathtt{\pi}}$$