Spike's Calculators

# Pentagon

Calculate the area and perimeter of a pentagon.
This calculator uses feet and or inches for measurements.

Pentagon = five equal length sides

### Pentagon Area and Perimeter

Side Length ft in n
d
Decimal Precision

#### Results:

Height ft
Diagonal Length ft
###### Area of the Pentagon
Decimal Square Feet ft²
Square Feet ft² in²
Decimal Square Inches in²
Square Inches in²
Square Metres
###### Perimeter of the Parallelogram:
Decimal Feet ft
Feet ft in
Decimal Inches in
Inches in
Metres m

#### Calculation

1. the length of a side in feet and or inches
2. decimal precision, the number of digits after the decimal point

#### Results

1. the height in decimal feet
2. diagonal length in decimal feet
3. the area of the pentagon in decimal square feet
4. area in square feet and inches
5. the area in decimal square inches
6. the area in square inches
7. the area in square metres
8. the perimeter of the rectangle in decimal feet
9. the perimeter in lineal feet and inches
10. the perimeter in decimal inches
11. the perimeter in inches
12. the perimeter in metres

##### Formula
```A = s²1.7204774005889669227590119773886
P =  s5
where A is the area of the pentagon
s the length of one of the sides
P  the perimeter of the pentagon
```

##### Conversions
```one square foot ( ft²) = 144 square inches (in²)
one square inch (in²) = 0.00694444444444443 square feet (ft²)
one square foot ( ft²) = 0.09290304 square metres (m²)
square inch (in²) = 0.00064516 square metres (m²)
```