Answers

2014-07-30T21:41:53+08:00
Let x be the width
Length= 3x+1
x(3x+1)=52
3x^2+x=52
3x^2+x-52=0
(3x+13)(x-4)=0
x= -13/3 or 4

w= 4 l= 13
P=2l + 2w
=2(13)+2(4)
=26+8
P=34 cm

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