**However,**many of you did not express the information clearly in

**algebra**(which is expected). In addition, many of you included the unit (cm) in the equation. This caused

**confusion**(whether the letter represents a variable or unit).

Remember:

**Express the information in an equation****Write a word/ statement to describe what you are finding (e.g. Perimeter, Area) to add meaning to the string of numbers****Check to write the correct unit at the end of the presentation**

Working for (a), submitted by Emmanuel Chew

Working for (b), submitted by Clarence

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