Areas of common shapes

Area is ameasure of the size or extent of a plane surface. Area ismeasured in square units such as mm2, cm2 and m2. This chapter deals with finding the areas of common shapes.

In engineering it is often important to be able to calculate simple areas of various shapes. In everyday life its important to be able tomeasure area to, say, lay a carpet, order sufficient paint for a decorating job or order sufficient bricks for a new wall.