Answer:
Step-by-step explanation:
angle subtended by hour hand in 2 hours=360/12 *2=60°
[tex]\theta=\frac{\pi }{180}*60=\frac{\pi }{3}\\l=30~cm\\\theta=\frac{l}{r}\\\frac{\pi }{3}=\frac{30}{r}\\r=\frac{3}{\pi }*30=\frac{90}{\pi }\approx 28.65 ~cm[/tex]
