Question 992424
Hi dear,
If lenght L=3x----(1) 
and width w=2x-1--(2)
Annd,
L*w=45----(3)
Put equ 1 and 2 in 3
3x(2x-1)=45
6x²-3x-45=0
Solve the quadratic equation as follows
*[invoke quadratic "x",6,-3,-45]
Since x=3 or -2.5
L=3(3)=9m
Or
L=3(-2.5)=-7.5m
Now,w=2(3)-1=5m
Or,
w=2(-2.5)-1=-6
Ingnore those once having the nagative sign
Then,
Perimeter p=2(L+w)
p=2(9+5)m
p=28m
The perimeter of the figure is 28meters.
HOPE THIS HELPS?