To find the square of the number 400, follow these steps:
1. Identify the number that you need to square. In this case, it is 400.
2. To square a number, you multiply the number by itself.
[tex]\[ 400 \times 400 \][/tex]
3. When you perform the multiplication, you find:
[tex]\[ 400 \times 400 = 160000 \][/tex]
Therefore, the square of 400 is 160000.
