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Right Time

At the time of writing the hour and minute hands of my clock are at right angles. How long will it be before they are at right angles again?

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Derive a formula for finding the area of any kite.

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The Pi Are Square

A circle with the radius of 2.2 centimetres is drawn touching the sides of a square. What area of the square is NOT covered by the circle?

All in a Jumble

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2
Start with the items that you are most confident about.