To calculate the area of a triangle in Excel, you need to use this formula =(<cell with length>*<cell with height>)/2. If the length is given in the A1 cell and height in the B1 cell, you need to ...

Revise how to calculate the area of a triangle. Learn how to calculate the triangle's area by first finding the area of a rectangle in this BBC Bitesize maths guide.

A KS3 Bitesize 11-14 Maths guide showing you how to prove the area of a triangle is half base × height.