53 points : ))
round to the nearest tenths

mercury-2.3165 cm
venus - 4.328 cm
earth-6cm
mars-9.116 cm
jupiter- 31.14 cm
saturn- 57.36 cm
uranus-114.84 cm
neptune-179.8 cm

See below

Step-by-step explanation:

Mercury-2.3 cm   The hundreths value isn't greater than 5, so the tenths stays the same.

Venus - 4.3 cm      The hundreths value isn't greater than 5, so the tenths stays the same.

Earth-6 cm            There is no hundreths value so the tenths stays the same.

Mars-9.1 cm           The hundreths value isn't greater than 5, so the tenths stays the same.

Jupiter- 31.1 cm      The hundreths value isn't greater than 5, so the tenths stays the same.

Saturn- 57.4 cm     The hundreths value is greater than 5, so the tenths values is raised by 1.

Uranus-114.9 cm   The hundreths value isn't greater than 5, so the tenths stays the same.

Neptune-179.8 cm  There is no hundreths value so the tenths stays the same.

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²