Marti is filling a 10– inch diameter ball with sand to make a medicine ball that can be used for exercising. to determine if the medicine ball will be too heavy after it is completely full of sand, she did some research and found that there is approximately 100 pounds of sand per cubic foot. how heavy will the medicine ball be after it is filled with sand, rounded to the nearest pound? a.30 pounds b.58 pounds c.24 pounds d.83 pounds