Three students measured the weight of a ball, their results were: John: 24.3 ± 0.1 g
Mark: 24.3 ± 0.2 g
Peter: 24.3 ± 0.3 g

The most precise student was:

Use the ratio form of kepler’s third law, = , and the data provided to determine the time it takes mars to orbit the sun. round your answer to the nearest tenth. earth’s orbital period = 1.0 earth year earth’s distance from the sun = 1.0 au mars’s distance from the sun = 1.5 au it takes mars about ⇒ 1.8 earth years to orbit the sun.