1

Problem

The rectangle’s length is 14ft and its perimeter is 36ft. What is its width?

2

Step

The perimeter(p) of a rectangle is

36 ft.

3

Step

The length(l) of a rectangle is

14 ft.

4

Hint

To find the width(w) of a rectangle

p = 2(l + w)
\$w = (p / 2) - l\$

5

Step

Substitute the values by using width formula

\$w = (36/2) - 14\$

6

Step

After division, we get

w = 18 - 14

7

Step

After subtraction, we get

4 ft

8

Solution

Then the width of a rectangle is 4 ft.

9

Sumup

Please summarize steps

Choices

10

Choice-A

It does not satisfy the given information about the rectangle’s perimeter and length

Wrong 5 ft

11

Choice-B

It does not satisfy the given information about the rectangle’s perimeter and length

Wrong 6 ft

12

Choice-C

It does not satisfy the given information about the rectangle’s perimeter and length

Wrong 3 ft

13

Choice-D

This is correct because it corresponds to the calculated width of the rectangle

Correct 4 ft

14

Answer

Option

D

15

Sumup

Please summarize choices