Which of these objects has the largest volume?

Convert the volumes to the same units. A cubic meter equals 1,000,000 cm³, so the balloon’s volume of 0.05 m³ is 50,000 cm³. The cube is 10 cm³, and 1,000 mm³ equals 1 cm³ because 1 cm³ = 1,000 mm³. Therefore, the spherical balloon has the largest volume.

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