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A possible question for the new GCSE,
The equation of a circle is x2+y2=25,
what is the circumference of the circle? (use π=3)
Answer below.
The equation of a circle
One thought on “The equation of a circle”
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The radius must be 5.
C = 3 x d =3 x 10 = 30.
Well done if you got that.