The perimeter of a rectangle is 24 cm. If the length is 7 cm, find it width

Question

asked Jan 7, 2022 167k views

2 Answers

Mikola · Answer 1 · 2022-01-08T09:00:32+0000

Answer:

The width is 5 cm

Explanation:

The perimeter of a rectangle is

P = 2(l+w)

Substitute what we know

24 = 2(7+w)

Divide each side by 2

24/2 = 2/2(7+w)

12 = 7+w

Subtract 7 from each side

12-7 = 7+w-7

5 =w

The width is 5 cm

Lashae · Answer 2 · 2022-01-11T02:16:09+0000

The formula for perimeter = 2 x length + 2 x width

Fill in the known dimensions:

24 = 2 x 7 + 2 x width

Simplify:

24 = 14 + 2 x width

Subtract 14 from both sides:

10 = 2 x width

Divide both sides by 2:

Width = 5 cm

Answer: Width = 5 cm.