Language, notation and formulas
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# 3.1.1 Try some yourself

## Activity 12

Write the folowing as word formulas and then shorten them

- (a) The area of a square is its length squared.

- (b) The area of a rectangle is its length times its breadth.

- (c) The area of a triangle is half its base times its height

## Answer

- (a) The area of a square = (length)2 = l2 where l stands for length.

- (b) The area of a rectangle = (length) × (breadth) = l × b or lb where l stands for length and b for breadth.

- (c) The area of a triangle is (base) × (height) = b × h or bh where b stands for base and h for height

(Note it is important to be clear about what each letter represents).

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