Area Calculation Tool

Here is a handy little tool you can use to find the area of common shapes.
Choose the shape, enter the lengths, and then click "Calculate Area"

	Triangle Area = ½b × h b = base h = vertical height			Square Area = a2 a = length of side
	Rectangle Area = w × h w = width h = height			Parallelogram Area = b × h b = base h = vertical height
	Trapezoid (US) Trapezium (UK) Area = ½(a+b) × h h = vertical height			Circle Area = πr2 Circumference = 2πr r = radius
	Ellipse Area = πab			Sector Area = ½r2θ r = radius θ = angle in radians

For Triangles, Squares, etc:
The base "b" or width "w" is:
The height "h" is:
The length "a" is:
For Circle or Sector:
The radius "r" is:
The angle "θ" in radians is: