MAFS.912.G-MG.1.2 and 1.3 practice

Hasbro has designed a group of hollow plastic toys with given shapes and dimensions. Determine how much material is used to manufacture each toy. Which toy shape requires the least amount of material?

This paper clip is just over 4 cm long. How many paper clips like this may be made from a straight piece of wire 15 meters long? Round to the nearest whole number.

The density of ethanol is 0.81 g/cm³ and the density of blood is 1.6 g/cm³. If the volume of a bottle of ethanol is 55 cm³ and the volume of a bag of blood is 278 cm³, how many more times as great is the mass of the blood compared to the mass of the ethanol?