3.1.1 Try some yourself
Activity 12
Write the folowing as word formulas and then shorten them
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(a) The area of a square is its length squared.
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(b) The area of a rectangle is its length times its breadth.
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(c) The area of a triangle is half its base times its height
Answer
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(a) The area of a square = (length)2 = l2 where l stands for length.
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(b) The area of a rectangle = (length) × (breadth) = l × b or lb where l stands for length and b for breadth.
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(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).
OpenLearn - Language, notation and formulas
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