I want to make a world larger than earth for a story I want to write. Please can someone tell me about the different characteristics a world with a 20% larger radius would have; how much gravity it would have, how many hours the days would be if it spun the same speed as earth and other info about the physics of the planet what effects the larger radius would have. Also the atmospheric pressure the speed of the atmospheric winds would be the same, as well as the density of the planet.