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# Calculate Area

## Calculate the area of a shape

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Select the shape for which you want to calculate the area:

## Calculate the area of various geometric shapes

### Triangle

The area of a triangle is calculated by multiplying the base of the triangle by its height and then dividing by two. This formula is expressed as:

`Area = 0.5 * base * height`

### Rectangle

The area of a rectangle is calculated by multiplying its length by its width. Here's the formula:

`Area = length * width`

### Square

A square is a special type of rectangle where the length and width are the same. The area is calculated by squaring the side length. Here's the formula:

`Area = side length²`

### Trapezium

A trapezium has two parallel sides known as the bases. The area is calculated by multiplying the average of these two bases by the height. The formula is expressed as:

`Area = 0.5 * (base1 + base2) * height`

### Pentagon

For a regular pentagon (where all sides and angles are equal), the area is calculated using the side length (a):

`Area = 0.25 * √(5*(5+2*√(5))) * side length²`

### Hexagon

For a regular hexagon (where all sides and angles are equal), the area is calculated using the side length (a):

`Area = (3 * √(3) / 2) * side length²`

### Circle

The area of a circle is calculated by squaring the radius and multiplying by pi (approximately 3.14159). Here's the formula:

`Area = pi * radius²`