Hey there!!
The given diagram would be a cuboid.
Given that RS = 6.
RS = length
And with this, we will also know that QT is the length.
And all the length are the same.
Hence,
RS = QT
<u><em>Hence, the measure of QT is 6 </em></u>
<u><em>Hope it helps!</em></u>
QT is a parallel line to RS
The image is a 3D cube, so QT would be the same as RS
QT = 6
