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Questions  

If a parallelepiped is formed by planes drawn through the points (5, 8, 10) and (3, 6, 8) parallel to
the coordinate planes, then the length of diagonal of the parallelepiped is

a
23
b
32
c
2
d
3

detailed solution

Correct option is A

The edge of a parallelepiped = (3 - 5,6 - 8,8 - 10)                                              = (2, -2, -2) Length of diagonal =(−2)2+(−2)2+(−2)2=4+4+4=23

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