The options you have given all are wrong. The answer will be 2 square root (10).
If we substract from the first end with the last end then we get the vector to be 6i-2j.
The magnitude of it is square root (6^2+(-2)^2)= square root (40)= 2 square root(10)
I hope my answer helps you. All the very best for your future endeavors!
Question : Directions: The information given below represents the number codes for the given letters. Select the combination of numbers so that the letters arranged accordingly will form a meaningful word. R = 1, E = 2, A = 3, C = 4, T = 5, I = 6, V = 7, E = 8
Option 1: 4, 1, 2, 3, 5, 8, 7, 6
Option 2: 4, 1, 2, 3, 5, 6, 7, 8
Option 3: 7, 2, 1, 3, 8, 4, 5, 6
Option 4: 4, 3, 1, 5, 6, 7, 8, 2
Question : If A : B = 2 : 3, B : C = 6 : 7, C : D = 14 : 3, then find A : B : C : D.
Option 1: 12 : 12 : 4 : 6
Option 2: 7 : 2 : 10 : 4
Option 3: 8 : 12 : 14 : 3
Option 4: 8 : 5 : 14 : 6
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