how to measure the float(浮動) things????

First you have to prepare a measuring cylinder, a weight and a thread.
Step 1: Measure the volume of the weight. ( Reading i)
step 2: Take the weight out and tie it to the float things with a thread.
Step 3: Measure the volume of the weight and the float things.(Reading ii)
At last, Calculate the volume of the float things.
Volume of float things = Reading ii minus Reating i

To measure floating things, like ping pomp, u can measure its diameter and times 22and divide it by 7.







To measure a cuboid, u can use a ruler to measure the length, width and height, then multiply them.