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# Mathematics

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### Volume of a sphere

The volume of a sphere can be calculated using the following formula V = (4÷3) x Π x r3 Where V = Volume (m3) Π = Pi (3.142 approx) r...

### Volume of a Cylinder

You can calculate the volume of a cylinder using the following formula V = ∏ x r2 x H Where: V = Volume Π = Pi (3.142 approx) r = radius H...

### 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...

### 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 rectangle

How to find the area of a rectangle The area = Height x Width Example: Height = 10 cm Width = 20 cmArea = 10 cm x 20...

### Area of an annulus

How to find the area of an annulus The area = π x (Outer Radius 2 - Inner radius 2) Example: π = 3.14 Outer Radius = 10 cm Inner radius = 8 cm Area =...

### 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 =...

### Area of a square

How to find the area of a square The area = Height x Width Example: Height = 10 cm Width = 10 cm Area = 10 cm x 10 cm ANSWER...

### Volume of a Cube

Because the Length, width and height of a cube are all the same length, the volume of a cube can be calculated using the...

### 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...