For some of these numbers it is very useful to be able to memorise them. If they are just two or three digits this is not usually too difficult, but a telephone number may be as many as twelve or more. Here are some mnemonic devices for remembering pi, and for telephone numbers. Mnemonics for the number Pi There once was a fellow from Greece,
Saratov Bridge. Saratov Bridge across the Volga River in Saratov, Russia was the longest bridge in the Soviet Union upon its inauguration in 1965. Its length is 2,803.7 meters and it connects Saratov on the right (west) bank of the Volga, with the city of Engels on the left (east) bank.
Vasco da Gama Bridge - 56,381 feet. Lisbon's Vasco da Gama Bridge is the longest in Europe, spanning a total distance of 10.7 miles. Taking three years to complete, the bridge opened for traffic in 1998 to celebrate the 500th anniversary of Vasco da Dama's discovery of the maritime route from Europe to India.