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If A(-6,7) and B(-1,-5) are two given points then the distance 2AB is (a) 13 (b) 26 (c) 169 (d) 238 |
Answer» Correct answer is (b) 26 The given points are A(-6,7) and B(-1,-5). So AB = \(\sqrt{(-6+1)^2+(7+5)^2}\) = \(\sqrt{(-5)^2+(12)^2}\) = \(\sqrt{25+144}\) = \(\sqrt{169}\) = 13 Thus, 2AB = 26. |
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