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Home > Maths > Measures > Area





Look at the triangle below:

Area of a triangle

If you multiply the base by the perpendicular height, you get the area of a rectangle. The area of the triangle is half the area of the rectangle.

So to find the area of a triangle, multiply the base by the perpendicular height and divide by two. The formula is:

Area = (b × h)/2


Find the area of this triangle:

Base 8cm and Height 5cm

The area of the triangle is:
(5 × 8)/2 = 40/2 = 20cm2


Area activity

In the right area? Find out with this activity.



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