find each number: round to the nearest hundredth if necessary: 13 use the table shown. mercury's radius is 2,440 kilometers planet radius (km) mercury mars 0 957 mercury'$ radius is what percent of jupiter'$ radius? jupiter 29.3r b. if the radius of mars is about 13.7% of neptunes radius, what is the radius of neptune? earth's radius is about 261.496 of mercury's radius: what is the radius of earth?