Use the Sine Rule to find the radius of the circumcircle.

Step 1: Use the Sine Rule to find the radius of the circumcircle.
The Sine Rule states that for any triangle with sides $a, b, c$ and opposite angles $A, B, C$, respectively, and circumradius $R$:

$$\frac{a}{\sin A} = \frac{b}{\sin B} = \frac{c}{\sin C} = 2R$$

In triangle RSQ, we are given:
Side $QR = 12 \text{ cm}$
Angle $\angle RSQ = 50^\circ$ (This angle is opposite to side $QR$)

Step 2: Substitute the given values into the Sine Rule formula.

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