Drag the orange dots on the edge of the circles to make a random-size annulus. Now try to estimate the area of the annulus just by looking at the squares inside it; Calculate the area using the formula; When you done click show details to see how close you got.
Meaning of the surname Avelar: Avelar all meanings: Volatile, Modern, Creative, Temperamental, Friendly, Competent, Cheerful, Generous, Serious, Active, Lucky. Avelar all surname meanings, graph
For other uses, see AVE (disambiguation). Alta Velocidad EspaÃ±ola (AVE) is a service of high-speed rail in Spain operated by Renfe, the Spanish national railway company, at speeds of up to 310 km/h (193 mph). Alta Velocidad EspaÃ±ola translates to Spanish High Speed, but the initials are also a play on the word ave, meaning bird. As of June 2013, the Spanish AVE system is the longest HSR network in Europe with 3,100 km (1,900 mi) and the second in the world, after China's. AVE trains run on a network of high-speed rail track owned and managed by Adif, where other high-speed (Avant, Alvia) and mid-speed (Altaria) services also operate.