Question

1. The perimeter of a rectangle is given by the expression below, where l is the length of the rectangle and w is the width.

2(l + w)

Find the perimeter of a rectangular window frame with a length of 19 inches and a width of 3 inches.

Answer 1

2(l+w)
width=3
length=19
 now the easiest thing you can do is this= 19+3+19+3= 44
or you can say 19+3*2=44