At Westonci.ca, we provide clear, reliable answers to all your questions. Join our vibrant community and get the solutions you need. Find reliable answers to your questions from a wide community of knowledgeable experts on our user-friendly Q&A platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

Find the radius of a circle in which the central angle, a, intercepts an arc of the given length s.
a = 30°, s = 87 km
The radius is =__Km