What is the perimeter of a rectangle with length 4 and width 3?

To find the perimeter of a rectangle, you can use the formula:

[ P = 2(l + w) ]

where ( l ) is the length and ( w ) is the width. In this case, the length is 4 and the width is 3.

First, you add the length and width together:

[ l + w = 4 + 3 = 7 ]

Next, you multiply this sum by 2 to find the perimeter:

[ P = 2 \times 7 = 14 ]

Thus, the perimeter of the rectangle is 14, which corresponds to one of the choices provided. This demonstrates that calculating the perimeter involves both the addition of the dimensions and then doubling that result, leading to a precise understanding of the dimensions' contribution to the shape's total perimeter.