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प्रश्न
Calculate the distance between A (7, 3) and B on the x-axis, whose abscissa is 11.
उत्तर
Here B is (11, 0)
AB = `sqrt((11 - 7)^2 + (0 - 3)^2)`
= `sqrt((4)^2 + (-3)^2)`
= `sqrt(16 + 9)`
= `sqrt(25)`
= 5 units.
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