The perimeter, p, of a rectangle is the sum of twice the length and twice the width. p = 2(l+w) units p = 2(5)+2(9) units p = 4x units p = (l+l)+(w+w) units p = 2(x+3) units

P=2(l+w)

Step-by-step explanation:

It is given that perimeter, P, of a rectangle is the sum of twice the length and twice the width.

Let length of rectangle is l and width of the rectangle is w.

Perimeter = 2 × Length + 2 × Width

Taking out common factors.

[Note: (l+l)+(w+w) units is also true but according to the statement only option 1 is true]

Therefore, the correct option is 1.

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step-by-step explanation: