You can put this solution on YOUR website! the circumference of a rectanglen is 70.if lenth is 7 times of height then wt is the area of rectangle
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C = 2L + 2H = 70
L + H = 35
L = 7H
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Sub for L in L + H = 35
7H + H = 35
H = 35/8
L = 245/8
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Area = L*H = 8575/64 sq units