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
Avena is a genus of Eurasian and African plants in the grass family. Collectively known as the oats, they include some species which have been cultivated for thousands of years as a food source for humans and livestock. Avena sativa â the common oat, a cereal crop of global importance and the species commonly referred to as oats. 2  Avena abyssinica â the Ethiopian oat, native to Ethiopia, Eritrea, + Djibouti; naturalized in Yemen + Saudi Arabia.