Manabokviz
Answered

the area of the rectangle is 52cm. find the perimeter when the length is 1cm more than three times its width

Sagot :

JthanSCOUTviz
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