How do you calculate the area of a triangle? To calculate the area of a triangle, multiply the height by the width (this is also known as the 'base') then divide by 2.

With two angles and the length of one side of the “triangle”, you can then bung all those numbers into a few trigonometric formulas (the sine rule and Heron’s formula can help) and shazam ...

Area of a triangle To calculate the area of a triangle, multiply the height by the width (this is also known as the 'base') then divide by 2. Find the area of a triangle where height = 5 cm and ...