2006-11-02 10:33:27 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
The perimeter of a rectangle is the sum of all 4 sides, i.e. twice the width plus twice the length.
P = 2W + 2L
120 = 2W + 2(40), from substituting what we know
120 = 2W + 80
120 - 80 = 2W + 80 - 80
40 = 2W
40 / 2 = 2W / 2
20 = W
The table is 20 inches wide.
2006-11-02 10:38:27 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Perimeter = 2 x length + 2 x the width
120 = 2 (40) + 2 (w)
120 = 80 +2w
40 = 2 w
20 = w
So the table is 20 inches wide
2006-11-02 18:36:56 · answer #2 · answered by danjlil_43515 4 · 0⤊ 0⤋
P = 2(L + W)
120 = 2(40 + W)
60 = 40 + W
20 = W
Width = 20inches
2006-11-02 19:04:35 · answer #3 · answered by Sherman81 6 · 0⤊ 0⤋
20 inches. cause you need two 40's which equals 80. then you have 40 left, 40 divided by two is 20.
2006-11-02 18:38:04 · answer #4 · answered by tiffers 2 · 0⤊ 0⤋