Respuesta :
perimiter=2L+2W
P=2(L+W)
if x=width then
P=2(L+x)
P=8x+8
hmm
8x+8=2(L+x)
distribute
8x+8=2L+2x
minus 2x both sides
6x+8=2L
divide both sides by 2
3x+4=L
the length is 3x+4
B is answer
P=2(L+W)
if x=width then
P=2(L+x)
P=8x+8
hmm
8x+8=2(L+x)
distribute
8x+8=2L+2x
minus 2x both sides
6x+8=2L
divide both sides by 2
3x+4=L
the length is 3x+4
B is answer
The length is 3x+4
What is Perimeter of rectangle?
The perimeter of a rectangle is the total length or distance of its boundary on all sides. The perimeter of a rectangle is a linear measure and is expressed in linear units of meters, feet, inches, or yards. Let us first understand the two main properties of a rectangle.
- All four angles of a rectangle are 90°.
- The opposite sides of a rectangle are equal in measure.
The perimeter of a rectangle is the total distance of its outer boundary. It is twice the sum of its length and width and it is calculated with the help of the formula: Perimeter = 2(length + width).
Given:
width= x
perimeter= 8x + 8
Now,
perimeter of rectangle= 2 ( l + b)
8x+8 = 2(l + x)
4x+4= l +x
l= 3x+4
Hence, length is 3x+4
Learn more about perimeter of rectangle here:
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