Question 816789
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Hi,
a rectangle has a perimeter of 28cm and width of 5cm what is its length 'L'?
<img src='http://img585.imageshack.us/img585/479/rectangle.png' border='0'/></a>
P = {{{2*L + 2*5cm = 28cm}}}
            2L = 18cm
             L = 9cm . length is 9cm
CHECKING our answer***
{{{2*9cm + 2*5cm = 18cm + 10cm = 28cm}}}