The study area is the winter vacation homework assigned by Miss Liu. Today, I will tell you how to calculate the area. Here's an example:
This is a mouse pad. Its length is about 24cm, and its width is about 20cm. What's its area?
It's very simple. Multiply its width by its length, which is its area. Expressed by mathematical formula: 24x20 = 480 square centimeters
It's easy, isn't it?