SOLUTION: The sides of a square measure 4 m by 4 m increased by 10%. Find the percent increase in the area.

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Question 1186036: The sides of a square measure 4 m by 4 m increased by 10%. Find the percent increase in the area.
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
before, 4%2A4=16

after, %284%29%281.1%29%284%29%281.1%29=4%5E2%2A1.1%5E2=16%2A1.1%5E2=16%2A1.21

amount increase, 16%2A1.21-16
16%281.21-1%29
16%2A%280.21%29
%2816%2A0.21%29%2F16=0.21

21 percent increase in area

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

The sides of a square measure 4 m by 4 m increased by 10%. Find the percent increase in the area.
Area, based on 4 x 4 sides: 16 m2 

Area, based on 4 m x 4 m sides being increased by 10%: (4 * 1.1)2 = 19.36 m2

Percent increase in area: