The Length Of A Rectangle Is Four Times Its Width. If The Perimeter Of The Rectangle Is 70m, Find Its Area.can You Help Me?

Lets suppose:
Width = x
So
Length = 4x
We are given that:
perimeter=70
the formula for the perimeter of a rectangle is :
Perimeter=2(L+W)
so plugging in the values:
p=2(L+W)
70=2(X+4x)
Expanding:
70=2x+8x
Adding:
70=10x
Dividing:
x=70/10
x=7
Hence the width is 7
To find the length:
L=4x
L=4(7)
Multiplying:
L=28
Hence the length is 28
The formula for the area of a rectangle is:
Area=L*W
So:
Area=28*7
area=196
So the area is 196