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Maths I

Area

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Exam type question

In your General Exam you might have to work out an area as part of your working.

Question

Hannah makes a kite by stretching plastic material over two rods with lengths {1.2m} and {0.6m}. If the material costs {\pounds 3} per square metre how much does Hannah spend on it?

Answer
  • We are told the cost per square metre. This is a measure of area.
  • We know the area is a kite and the two rods are the diagonals.
A kite shape standing on its pointiest corner. The vertical length, across opposite corners, is 1.2 metres. The horizontal width, across opposite corners, is 0.6 metres.

Area of the kite:

Area = {1 \over 2 } x diagonal x diagonal

= {{1 \over 2} \times 1.2 \times 0.6}

= {0.36m^2}

Cost = {0.36 \times 3}

= {\pounds 1.08}

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Watch

Barry and Paul Chuckle.

Class Clips

To me, to you...the Chuckle brothers learn some useful tips for measuring area

Play

A picture of Mia Cadaver

Tombstone Timeout

Swot up your sums with Mia Cadaver's maths game

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