A consignment of steel weighing 5 tonnes
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The usual substitutions (x=r·cos(θ), y=r·sin(θ)) will give
x² + y² = 6x +7y
Completing the square gives
(x² -6x +9) + (y² -7y +49/4) = 9 +49/4
(x -3)² +(y -3.5)² = 21.25
x² + y² = 6x +7y
Completing the square gives
(x² -6x +9) + (y² -7y +49/4) = 9 +49/4
(x -3)² +(y -3.5)² = 21.25