Question : $\triangle$ XYZ is a right-angled triangle and $\angle$Y = 90° If XY = 2.5 cm and YZ = 6 cm, then the circumradius of $\triangle$XYZ is:

Question : In a triangle $XYZ$ right-angled at $Y$, if $XY=2\sqrt{6}$ and $XZ-YZ=2$, then $\sec X+\tan X$ is:

Question : In $\triangle X Y Z, \angle X=90^{\circ}, YZ=15 \mathrm{~cm}$, and $X Z=12 \mathrm{~cm}$. Then find $\cos Y$.

Question : In triangle XYZ, G is the centroid. If XY = 11 cm, YZ = 14 cm, and XZ = 7 cm, then what is the value of GM?

Question : In $\triangle P Q R$, $\angle Q=90^{\circ}$, $PQ=8$ cm and $\angle P R Q=45^{\circ}$ Find the length of $QR$.