Question #03095

1 Answer
MJ
Jan 29, 2018

#44%#

Explanation:

Length of side of square = #30# cm

Increase in length = #20%#

So, new length = #30xx 120/100# = #36# cm

Now, area of original square = #30xx30# = #900 cm^2#

Area of square with #20%# increased length = #36xx36# = #1296cm^2#

Change in area = #1296-900# = #396 cm^2# (we divide by #900# and nor by #1296# because the increase in area or change in area is as compared to the original area)

Percent increase in area = #396/900 xx100# = #44%#

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