Answer :

Since it is given that the distance is to be found from origin so in this question we have to use the distance formula keeping one – point fix i.e. O (0,0), as shown below:


OB = √{(– 5 – 0)2 + (5 – 0)2}


= √{(– 5)2 + (5)2}


= √{25 + 25}


= √50


OB = 5√2 units


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