First slide

Introduction to 3-D Geometry

Question

P (0, 5, 6), Q (1, 4, 7), R (2, 3, 7) and S (3, 4, 6) are four points in the space. The point farthest from the origin O (0, 0, 0) is

Easy

A

p
B

Q
C

R
D

S

Solution

$\begin{array}{l} O P^{2} = 0 + 5^{2} + 6^{2} = 61, O Q^{2} = 66, O R^{2} = 62 \\ O S^{2} = 61 \end{array}$

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