How To Calculate Area. The simplest (and most commonly used) area calculations are for squares and rectangles. Let us take a triangle abc, whose vertex angles are ∠a, ∠b, and ∠c, and sides are a,b and c, as shown in the figure below.
The area for our case is equal to 11.25 in². Continue to click along the outside edge of the shape you want to calculate the area of. Calculating area to work out the area of a square or rectangle, multiply its height by its width.
Calculating the Area of Basic Shapes
Enter an address or zoom into the map then click on the starting point of your shape. Click quantification tab areabook extension panel (calculate areas). To find the area of a rectangle, multiply its height by its width. The simplest (and most commonly used) area calculations are for squares and rectangles.