# Area and Perimeter

# Diamond (Rhombus) - Metric

Calculate the area and perimeter of a diamond.

This calculator uses metres for measurements.

A diamond (rhombus) is a four-sided shape where all four sides are the same length, and the opposing angles are equal. If the angle is 90 degrees, it is a square.

##### Note:

The angle can not be more than 180°

### Diamond Area and Perimeter - Metric

#### Calculation

- the length of a side in metres
- one of the angles in degrees
- decimal precision, the number of digits after the decimal point

#### Results

- the second angle in degrees
- the area of the diamond in square metres
- the area in square feet
- the area in square inches
- the perimeter of the diamond in metres
- the perimeter in feet
- the perimeter in inches

##### Formula

A = s²sin(a)
P = 4s
where A is the area of the diamond
s the length of a side
the larger angle converted to radians
P the perimeter of the diamond

##### Conversions

one metre (m) = 3.28083989501312 feet (ft)
one metre (m) = 39.3700787401575 inches (in)
one square metre (m²) = 10.7639104167097 square feet (ft²)
one square metre (m²) = 1550.0031000062 square inches (in²)

### Area and Perimeter of Various Shapes

### Changing the shape of an Area

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