Asked by Vishwanan
The dimensions of rectangle is 40*25if the breadth and length are increased by 15% what is their new area in percentage
Answers
Answered by
Reiny
new length = 1.15(40) = 46
new width = 1.15(25) =28.75
new area = 28.75(46) = 1322.5
old area = 1000
new area as a percent of old area
= 1322.5/1000 = 132.25%
or
areas of similar shapes are proportional to the square of their sides
--- 1.15^2 = 1.3225 = 132.25%
new width = 1.15(25) =28.75
new area = 28.75(46) = 1322.5
old area = 1000
new area as a percent of old area
= 1322.5/1000 = 132.25%
or
areas of similar shapes are proportional to the square of their sides
--- 1.15^2 = 1.3225 = 132.25%
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