Spike's Calculators

Semicircle - Metric

Calculate the area and perimeter of a semicircle.

This calculator uses metres for measurements.

Semicircle = a circle cut in half along its diameter.

Semicircle Area and Perimeter - Metric

Diameter m
Decimal Precision

Results:

Arc Length
Area of the Semicircle
Square Metres
Square Feet ft²
Square Inches in²
Metres m
Feet ft
Inches in

Calculation

1. the diameter of the semicircle.
2. decimal precision, the number of digits after the decimal point

Results

1. the length of the arc
2. the area of the semicircle in square metres
3. the area in square feet
4. the area in square inches
5. the perimeter of the semicircle in metres
6. the perimeter in feet
7. the perimeter in inches

Formula
```A = 𝝅/4D²/2;
P = 𝝅D/2+D
where A is the area of the semicircle
𝝅= 3.14159265
D the diameter
P  the circumference of the semicircle
```

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)
```