FAQ With this pentagon calculator, you'll find essential properties of a regular pentagon: side, diagonal, height, perimeter, and area, as well as the circumcircle and incircle radius. Type any value, and the remaining parameters will be calculated on the spot.

More information from the unit converter How many cm in 1 inch? The answer is 2.54. We assume you are converting between centimetre and inch . You can view more details on each measurement unit: cm or inch The SI base unit for length is the metre. 1 metre is equal to 100 cm, or 39.370078740157 inch.