Question

You are a teacher, your classroom has 3 bulleting board that measure 6 feet by 6 feet each. You can to put a decorative border around each bulletin board. You will buy rolls of border that contain 20 feet per roll 2

Answer 1

First, we find the perimeter of each board by adding their sides

$P=6+6+6+6=24ft$

The perimeter of each board is 24 feet long.

Then,

$24\times3=72ft$

The teacher would need 72 feet to decorate all three boards.

If each roll has 20 feet, then there would be needed 4 rolls in total to half enough to decorate all three boards.

Hence, the number of rolls is 4.