How could you find the mass of a box of pencils? Find the mass of the parts, and then add those masses together.
Find the mass of each pencil and the mass of the box, and then add those masses together.
Find the mass of the whole.
all of the above

Explanation:

All of the ways mentioned can be used to determine the mass of the box and pencils contained.

Mass is the amount of matter contained in a substance. The substance here is the box and the pencils it contains. We can set off to measure the mass of the box and pencil as a wholeAlso, we can group the pencil find their mass and add to the mass of the box. All of these methods will accurately give us the mass of the box and pencil it contains.

Its sun is cooler than our sun, so there is a possibility that water can exist in liquid state on this planet.