SOLUTION: 41. Side of a square increased by 10%, find the increase in area. (A) 20% (B) 10% (C) 21% (D) 30%

Algebra ->  Test -> SOLUTION: 41. Side of a square increased by 10%, find the increase in area. (A) 20% (B) 10% (C) 21% (D) 30%      Log On


   

Question 1121034: 41. Side of a square increased by 10%, find the increase in area.

(A) 20% (B) 10% (C) 21% (D) 30%
Found 2 solutions by greenestamps, surubabu:
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


Side length increased by 10% --> side length multiplied by 1.10, or 1.1. (1+10% = 1+.10 = 1.10)

If the side length gets multiplied by 1.1, the area (side length squared) gets multiplied by (1.1)^2 = 1.21 = 1+.21 --> area gets increased by .21, or 21%.

Answer C

Answer by surubabu(1) About Me  (Show Source):
You can put this solution on YOUR website!
Thank you very much sir.