So you can set up proportion.
[tex]\dfrac{7.5\ \text m}{76^\circ} = \dfrac C{360^\circ}[/tex]
Here, you need to solve for C.
You can do that by multiple both sides by 360 and then you should get [tex]360^\circ\cdot\dfrac{7.5\ \text m}{76^\circ} = C \approx \boxed{35.526\ \text m}[/tex]
Hope this helps.
