The length of XY is 5 units. Check more about the length of an object or line below
What is length?
The length of an object is known to be the distance that is measured from one end to another end of an object.
Note that:
2a - 2 = a + 1
2a - a = 1+2
a = 3
XY = 3a - 4
= 3×3 - 4
= 9 - 4 = 5
Therefore, the length 5 units
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