Here’s a useful guide to calculating the area of basic shapes.
Rectangle
![]() Area = w × h w = width
h = height |
Triangle
Area = ½b × h b = base h = vertical height |
Square![]() Area = a2 a = length of side |
Trapezium Area = ½(a+b)×h h = vertical height |
Parallelogram Area = b × h b = base h = vertical height |
Ellipse Area = πab |
Sector Area = ½r2θ r = radius θ = angle in radians |
Circle![]() Area = πr2 Circumference = 2πr r = radius |