What is the answer to this??

The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?

Select the two pairs of figures that are similar.

Fatima plans to spend at least $15 and at most $20 dollars on sketch pads and pencils. if she buys 2 sketchpads, how many pemcils can she buy while staying in her price range? fatima can buy between and pencils. ? (type whole numbers. use ascending? order.)