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...
HB
Related Maths GCSE answers
All answers ▸Solve simultaneously, x+y=2 and 4y^2-x^2=11
Benjamin has a 0.7 chance of passing his driving test the first time and a 0.85 chance of passing the second time. What is the probability of his passing on either the first or second try?
What other A Level subjects would be useful towards applying to do a Mathematics degree?
3x + y = -4; 3x -4y = 6; Solve the simultaneous equations for x and y