Answer:
L= 56cm
W= 14cm
Step-by-step explanation:
Given data
Perimeter of the frame= 140cm
Let the width be
W=x cm
Length= 4x
We know that
P= 2L+2W
subsitute
140= 2(4x)+2(x)
140 = 8x+2x
140= 10x
Divide both sides by 10
x= 140/10
x= 14cm
The length is
L= 4(14)
L= 56cm
