To calculate the area of a rectangle you multiply the length by the width. A right-angled triangle is like half a rectangle. So to calculate the area of a triangle, you can work out the area of the ...

The basic formula for calculating the area of a rectangle in Excel is length * height. Thus, the syntax of the formula for finding the area of a rectangle in Excel would become: You could use the Fill ...

Looking for more revision? There are videos, diagrams and more on calculating the area of a triangle using trigonometry in this National 5 Maths guide. National 5 Maths - Calculating the area of a ...

Forbes contributors publish independent expert analyses and insights. I write about mathematics and its applications The area and perimeter ratios are shown and as n, the number of sides, gets larger ...