Posted by Phoenix on Sunday, November 7, 2010 at 12:53pm.
A rectangle has a perimeter of 48 cm.The shortest side is 10 cm long.What is the length is the longest side?

Math  Ms. Sue, Sunday, November 7, 2010 at 12:56pm
P = 2L + 2W
48 = (2*10) + 2W
48 = 20 + 2W
28 = 2W
28/2 = W
14 = W