The coordinates of the centre of a circle are

MATHEMATICS · Subjective · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

The coordinates of the centre of a circle are (2a,a−7)(2a, a - 7). Find the value(s) of 'a' if the circle passes through the point (11,−9)(11, -9) and has diameter 10210\sqrt{2} units.

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