For cones with slant height l and radius r surface area is calculated using this formula. Area length width The Farmer and his Daughter Unsold Land Imagine a farmer trying to sell a piece of land that happens to be perfectly rectangular. A p x r2 In this formula A is again the area r represents the radius half the distances from one side of the circle to the other and p is a Greek letter pronounced pi which is 314 the ratio of a circles circumference to its diameter.
Trapezoid US Trapezium UK Area ½ab h h vertical height.
Area length width The Farmer and his Daughter Unsold Land Imagine a farmer trying to sell a piece of land that happens to be perfectly rectangular. The area is length times width. Area w h. Given a rectangle with length l and width w the formula for the area is.