three squares have perimeters of 12m,20m,24m respectively.if a rectangle is constructed whose area is equal to the combined area of the three squares such that its width is 7m, find the length of the rectangle
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1st one's area=3*3=9 m^2
2nd ". "=5*5=25m^2
3rd ". ". =6*6=36m^2
Total area=70
length=70/7=10m
2nd ". "=5*5=25m^2
3rd ". ". =6*6=36m^2
Total area=70
length=70/7=10m
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