Applying the centroid theorem, the length of QR is: 12.
<h3>What is the Centroid Theorem?</h3>
According to the centroid theorem, the centroid (the point where the three medians intersect) is 2/3 of the distance from the midpoint of the a side to each vertex opposite vertex of the triangle.
Given:
QU = 8
QU = 2/3(QR)
Substitute
8 = 2/3(QR)
3(8) = 2(QR)
24 = 2(QR)
QR = 12
Therefore, applying the centroid theorem, the length of QR is: 12.