- Area is the number of the square units it takes to cover a surface. Always expressed as squared units.
Formulas for finding the area of a square, rectangle, triangle, and circle.
Finding the perimeter of a given area of a circle.
Question: A square has an area of 35 squared centimentres. What is the measure of its perimeter.
Find the area of the given shape.
First way: Finding the area of the whole shape including the missing shape.. Then subtract the area of the missing shape from the whole shape to get the area of the given shape.