The distance of point I(3, 4,5) from the yz-plane is 

The distance of point I(3, 4,5) from the yz-plane is 

  1. A

    3 units

  2. B

    4 units

  3. C

    5 units

  4. D

    550 units

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    Solution:

    When we draw a perpendicular line from P(3,4, 5) on the yz-plane the r-coordinate will be zero and the other
    coordinate y and e will be 4 and 5, i,.e. coordinate on yz-plane be Q(0, 4,5).
     Distance between P and Q = PQ

    =(30)2+(44)2+(55)2=32+02+02=3 units 

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