SOLUTION: The length of a square is increased by 10%. What is the corresponding percentage increase in the area of the square?

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Question 929226: The length of a square is increased by 10%. What is the corresponding percentage increase in the area of the square?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Note that if the side length is x, then its area is x^2. If you increase the side length by 10%, the side length is now 1.1x and its area is (1.1x)^2 = 1.21x^2, or a 21% increase.