Area is the amount of space a two dimensional (flat) surface takes up. It is useful because it is how much of a material is needed to make a hollow container. Area is the amount of surface covered by a close object or shape.
Small areas are measured in square centimetre and large areas are measured in square kilometre. Areas of regular shapes like square, rectangle, triangle, can be calculated through formulas. The area of an irregular shape can be calculated through grid or graph paper. The formula of area is length * breadth.
- Area of a rectangle is the length of any two touching sides multiplied together. In other words, length times width.
- Area of a triangle is half of the base multiplied by the perpendicular height. This can be found using the trigonometry formula, .
- Area of a circle: .