Here's a breakdown:
* Centimeter: A unit of length, equal to one hundredth of a meter.
* Square: Means that we are measuring a two-dimensional space. Imagine a square with each side being 1 centimeter long. The area inside that square is 1 square centimeter.
In simpler terms: Centimeters square tells you how much surface a flat object covers. It's like counting how many tiny squares, each 1 cm by 1 cm, you need to fit inside a shape.
Example:
* A piece of paper that is 21 cm long and 29.7 cm wide has an area of 623.7 cm².
