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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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How do I a differentiate a cosine function?

Use factorisation to solve the equation x^2+5x+6=0

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What exactly is pi?

Related Maths GCSE answers

How do I a differentiate a cosine function?

Use factorisation to solve the equation x^2+5x+6=0

Rectangle ABCD has sides 2x+5 and x+2 with rectangle EFGH of sides x+3 and x cut out of it. The total area of shape ABCD is 5cm^2. Show that 0 = x^2 + 6x +5 [5 Marks]

There are 30 kg of potatoes in a wheelbarrow. A farmer adds some carrots into the wheelbarrow. The total weight of the wheelbarrow now is 110 pounds. What weight of carrots did the farmer put into the wheelbarrow? 1 kg = 2.2 pounds

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