alleryThe distance between (1, 2) and (4, 6) is
A10 units
B4 units
C3 units
D5 units
Answer & Solution
Correct answer: D. 5 units
1. d = sqrt((4 - 1)^2 + (6 - 2)^2).
2. = sqrt(9 + 16) = sqrt(25).
3. = 5 units.
4. So the distance is 5 units.
_Source: Selina Concise Mathematics Class 9, Ch 26 Co-ordinate Geometry (Mistral OCR'd PDF), section on distance formula_
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