Question

A rectangle has a width, w, equal to 6 less than the length, l. Which expressions represent ways to find the perimeter of the rectangle?

Select ALL that apply.



4 L plus 12
4L−12
2(L−6)+2l
2(6−L)+2l
12+2L+2L

Answer 1

The perimeter of a rectangle with a width 6 less than the length can be calculated using the expressions 4L+12, 4L-12, and 2(L-6) + 2l.

Step-by-step explanation:

The expressions that represent ways to find the perimeter of the rectangle are:

• 4L+12
• 4L-12
• 2(L-6) + 2l

These expressions account for the fact that the width of the rectangle is 6 less than the length. Perimeter is calculated by adding up all the sides of the rectangle, so in this case, it would be 2 times the width plus 2 times the length.

Answer 2

4L-12

Step-by-step explanation:

let's assume the length = L

then the width of the rectangle is L - 6

perimeter = 2× (a+b)

where "a" and "b" are the length and the width of the rectangle.

so perimeter = 2× (L + L - 6)

2 × ( 2L - 6)

4L - 12