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12 questions from this quiz
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x2+y2=r2x^2 + y^2 = r^2x2+y2=r2
Pythagoras' theorem
x2+y2=25x^2 + y^2 = 25x2+y2=25
x2+y2=94x^2 + y^2 = \frac{9}{4}x2+y2=49
777
333
323\sqrt{2}32
555
x2+y2=13x^2 + y^2 = 13x2+y2=13
Divide both sides by 9
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