The equation of a circle is x^2 + y^2 -9 Work out the length of the diameter

asked Apr 22, 2022 94.5k views

3 votes

The equation of a circle is x^2 + y^2 -9
Work out the length of the diameter

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6 votes

Answer:

d = 6 units

Explanation:

If x^2 + y^2 = 9, x^2 + y^2 = 3^2 = r^2. The radius is 3 and the diameter is twice that, or d = 6 units

David Niki answered Apr 28, 2022

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