Area of Triangle Formula: In this article, we cover the definition of triangle and its various types based on the angles and length of side. Besides, we will see how to calculate the area of a ...

Learn how to calculate the areas of rectangle, triangle, and circle in Excel for a single cell or range of cells usin this formula.

A demonstration of how to calculate the perimeter and area of simple and compound shapes with the help of the crow and Detective Stinker.

The outside edge of a shape is known as the perimeter. Learn how to work out the perimeter of a 2D shape with this Year 4 article from BBC Bitesize.