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What exactly is pi?

Pi is the ratio between a the circumference and the diameter of a circle. It's just a number which happens to describe this ratio for any circle you can think of. Let me explain, using the whiteboard...

Answered by Harry B. • Maths tutor

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What exactly is pi?

Related Maths GCSE answers

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Solve the following simulatenous equation to find the values of both x and y: 5x+2y=16 and 3x-y=14

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