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OpenStudy (anonymous):
The perimeter of a rectangle is 420 cm. The length is 10 cm more than three times the width. Find the area of the rectangle
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OpenStudy (anonymous):
420= 2l+2w 420=2(10+3w)+2w 420=20+6w+2w 400=8w w=50cm therefore l=160cm Also, Area=l x w so A= 160 x 50 A=8000cm2
OpenStudy (anonymous):
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OpenStudy (anonymous):
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OpenStudy (anonymous):
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