How many cubic decimeters is one liter, and how many cubic centimeters is one milliliter There are solid iron balls and solid plastic balls of the same volume. In order to measure the density of plastic, put one iron ball in the left plate of the balance, and when six plastic balls are placed in the right plate, the balance can just balance. Calculate the density of plastic balls. The density of iron balls is (7.8 times 10 cubic kilogram per cubic meter). Thank you

How many cubic decimeters is one liter, and how many cubic centimeters is one milliliter There are solid iron balls and solid plastic balls of the same volume. In order to measure the density of plastic, put one iron ball in the left plate of the balance, and when six plastic balls are placed in the right plate, the balance can just balance. Calculate the density of plastic balls. The density of iron balls is (7.8 times 10 cubic kilogram per cubic meter). Thank you

7.8/6=1.3