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A point $P(1,2,3)$ is one vertex of a cuboid formed bythe coordinate planes and the planes passing through $P$ and parallel to the coordinate planes. What is the length of one of the diagonals of the cuboid?
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Verified Answer
The correct answer is:
$\sqrt{14}$ units
Length of one of the diagonal of cube
$=\sqrt{(1)^{2}+(2)^{2}+(3)^{2}}$
$=\sqrt{1+4+9}=\sqrt{14}$ units
$\therefore \quad$ Option (b) is correct.
$=\sqrt{(1)^{2}+(2)^{2}+(3)^{2}}$
$=\sqrt{1+4+9}=\sqrt{14}$ units
$\therefore \quad$ Option (b) is correct.
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