Question

A rectangle has a perimeter of 18. if the length is 4, what is the width?

Answer 1

Answer:5

Explanation:

2 x length + 2 x width = perimeter of rectangle.

you know the total is 18

(2 x 4) x 2w = 18

8 x 2w = 18

2w = 10

w = 5

Answer 2

The width is 5. The formula is 2l+2w. If the length is 4 the width must be 5
2(4) + 2(5)= 18
8+10=18
18=18