Math 4
posted by Marco .
Karen is buying wallpaper border for her bedroom
Which is 12ft by 13ft. If the border is sold in rolls of 5yards each how many rolls will she need to purchase?
156ft. Divide by 3 is total 52 yrds. So divide by 5 yd 10 for 50 yard.karen would need at 11 rolls is that right?

No.
P = 2L + 2W
P = 24 + 26
P = 50 feet
50/3 = 16.67 yards
16.67 / 5 = 3.33 = 4 rolls