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.

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 ...

So to calculate the area of a triangle, you can work out the area of the rectangle and then divide by 2. The formula for working out the area of a right-angled triangle is: b a s e × h e i g h t 2 ...