Answer:

Second, judgment.

Answer:

This part of the extended materials mainly examines the knowledge points of the volume:

When the space occupied by an object is a three-dimensional space, the size of the occupied space is the volume of the object. The international unit of volume system is cubic meters. One-dimensional space objects (such as straight lines) and two-dimensional space objects (such as squares) are all zero volumes.

The volume formula is used to calculate the volume, that is, the mathematical formula to calculate the volume of various geometric shapes. For example: cylinder, prism, cone, platform, sphere, ellipsoid, etc.

Generally speaking, geometry is a mathematical formula of the volume of a graph composed of faces, intersection lines (intersection points of faces) and intersection points (intersection points of intersection lines or convergence points of surfaces).

Unit conversion:

1 cubic decimeter = 1000 cubic centimeter = 100000 cubic millimeter = 1 liter = 1000 ml =0.06 1 cubic inch.

1 cm3 = 1000 cm3 = 1 ml =0.00006 1 cubic inch.

1 m3 = 1000 cubic decimeter = 1000000 cubic centimeter = 10000000 cubic millimeter =0.353 cubic foot = 1.3079 cubic yard.

1 cubic inch =0.0 16387 cubic decimeter = 16.387 cubic centimeter = 16387 cubic millimeter.

1 cubic foot =28.3 cubic decimeter = 28,300 cubic centimeters = 28,300,000 cubic millimeters.

1 cubic yard =27 cubic feet =0.7646 cubic meter = 164.6 cubic decimeter = 164600 cubic centimeter = 16460000 cubic millimeter.

1 cubic foot = 3 1. 143 bushels (English) = 32. 143 bushels (American)

1 gallon (American) = 0.0054 1 18 m3 = 0.8364 1845 gallon (British).