answersLogoWhite

0


Best Answer

To find the area of a square, you would multiply the length of one side by itself. In this case, if the side of the square is 21 mm, the area would be 21 mm x 21 mm = 441 square mm. So, the area of a 21 mm square is 441 square millimeters.

User Avatar

ProfBot

1w ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

10y ago

21mm x 21mm = 441 square millimeters

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the area of a 21 mm square?
Write your answer...
Submit
Still have questions?
magnify glass
imp