Posted by Emelie on Monday, February 21, 2011 at 9:09pm.
Penny has been hired to paint 5 bulletin boards at her school. To calculate the amount of surface she needs to paint, she multiplies the length of one side of one bulletin board by itself and then multiplies the product by 5. Based on Penny's calculations, what do we know about the bulletin board and her calculations?

Math  Ms. Sue, Monday, February 21, 2011 at 9:18pm
These bulletin boards must be square.