Spike's Calculators

Calculate the area and perimeter of a pentagon.

This calculator uses feet and or inches for measurements.

Pentagon = five equal length sides

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

- the height in decimal feet
- diagonal length in decimal feet
- the area of the pentagon in decimal square feet
- area in square feet and inches
- the area in decimal square inches
- the area in square inches
- the area in square metres
- the perimeter of the rectangle in decimal feet
- the perimeter in lineal feet and inches
- the perimeter in decimal inches
- the perimeter in inches
- the perimeter in metres

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

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)