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Area of a segment

The area of a segment can be calculated using the following formula If using degrees: A = (r2 ÷ 2) x ((Π ÷ 180 x Θ) - sin Θ) If...

Area of a sector

The area of a sector can be calculated with the following formula: If calculated in degrees: A = (Θ ÷ 360) x (Π x r2) If calculated in radians: A...

Area of an Ellipse

To calculate the area of an Ellipse, you just need to drop two numbers into the following formula: A = π x ((w ÷ 2) x (h ÷...

Area of a Rhombus

To calculate the area of a Rhombus, you just need to drop two numbers into the following formula: A = (w x h) ÷ 2 Where: A...

Area of a Triangle

How to calculate the area of a triangle It's very simple to calculate the area of a triangle, you just use the following formula. A =...

Area of a Trapezium

How to calculate the area of a Trapezium. It's very simple to calculate the area of a Trapezium, you just need to use the following...

Area of a Parallelogram

How to calculate the area of a Parallelogram. It's very simple to calculate the area of a Parallelogram, you just need to use the following formula. A =...

Arc length, how to calculate

You can calculate the length of an arc quite simply, but how you calculate it depends if the angle of the arc is measured...

Circumference of a circle

How to calculate the circumference of a circle. The circumference of a circle can be calculated using the formula: 2 x π x r Where π (pi) = approx 3.14 and...

Area of an octagon

How to calculate the area of an octagon There area two main methods to calculate the area of an octagon. Method 1: If you know the length...