SOLUTION: If the length of each side of a square is decreased by 10%, how much percent will the area of the square decrease?

Algebra ->  Length-and-distance -> SOLUTION: If the length of each side of a square is decreased by 10%, how much percent will the area of the square decrease?      Log On


   



Question 939451: If the length of each side of a square is decreased by 10%, how much percent will the area of the square decrease?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
Note: 1•x - .10x = .90x
100%28%281%2Ax%5E2+-+%28.9x%29%5E2%29%2Fx%5E2%29+=+100%281-.81%29x%5E2%2Fx%5E2= 19%