There are a variety of modern definitions of economics, some reflect evolving views of the subject or different views among economists.
So the area of the square is 7 x7 = 49 cm^2 and the perimeter of the square is 7 x 4 = 28 cm. And in example 1 you have a square of side length 8cm and you need to work out the area and perimeter of the square. So the area of the square is 8 x8 = 64 cm^2 and the perimeter of the square is 8 x 4 = 32 cm.
The formula for the area of a circle is Area = Ïr^2, where r is the radius of the circle and Ï = 3.14. If you have a circle with radius of r = 3, then the area of the circle would be: A = Ï(3)^2 = 9Ï = 28.27. Pie R Squared. Pi R Squared. This Site Might Help You.