width of a rectangle

[tanyas1976]

The length of a rectangle is fixed at 18 cm. What widths will make the perimeter greater than 78 cm?
*Widths must be greater than ____cm.
I came up with 21 cm..is this right?
Thank you

 

[Deleted member 4993]

The length of a rectangle is fixed at 18 cm. What widths will make the perimeter greater than 78 cm?
*Widths must be greater than ____cm.
I came up with 21 cm..is this right? <<< Correct
Thank you

 

[tanyas1976]

Thank you!

 

[precious]

The length of a rectangle is fixed at 18 cm. What widths will make the perimeter greater than 78 cm?
*Widths must be greater than ____cm.
I came up with 21 cm..is this right?
Thank you

How did you reach this answer/

 

[Denis]

precious, what is the perimeter of a 18 by 21 rectangle?