Can someone explain the directions , i just really don’t understand what it’s asking me-

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?

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.

Acircle has a diameter of 10 what is the area of the circle? use 3.14 for pi. round to the nearest hundredth