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2. Great-circle navigation - Wikipedia

   en.wikipedia.org/wiki/Great-circle_navigation

   The distance along the great circle will then be s 12 = Rσ 12, where R is the assumed radius of the Earth and σ 12 is expressed in radians. Using the mean Earth radius , R = R 1 ≈ 6,371 km (3,959 mi) yields results for the distance s 12 which are within 1% of the geodesic length for the WGS84 ellipsoid; see Geodesics on an ellipsoid for ...

3. MapQuest - AOL Help

   help.aol.com/products/mapquest

   MapQuest offers online, mobile, business and developer solutions that help people discover and explore where they would like to go, how to get there and what to do along the way and at your destination.

4. MapQuest - Wikipedia

   en.wikipedia.org/wiki/MapQuest

   MapQuest's original services were mapping (referred to as "Interactive Atlas") and driving directions (called "TripQuest"). [ 5 ] Sensing the emerging demand for spatial applications on the Internet, and with crippling network latency in Lancaster, the executive team of Barry Glick and Perry Evans moved MapQuest to the up-and-coming LoDo area ...

5. Yahoo Maps - Wikipedia

   en.wikipedia.org/wiki/Yahoo_maps

   Driving Directions: Driving directions can be displayed on a map or in printable form, with optional turn-by-turn maps, or as simple text. Links to driving directions can be e-mailed, and text directions sent to mobile phones. Multi-point driving directions: Multiple addresses can be entered and manually reordered for complex driving directions.

6. Interstate 495 (Massachusetts) - Wikipedia

   en.wikipedia.org/wiki/Interstate_495_(Massachusetts)

   Interstate 495 (I-495) is an auxiliary route of I-95 in the US state of Massachusetts, maintained by the Massachusetts Department of Transportation (MassDOT). Spanning 121.56 miles (195.63 km), it is the second-longest auxiliary route in the Interstate Highway System, being roughly 11 miles (18 km) shorter than I-476 in Pennsylvania.

7. Earth radius - Wikipedia

   en.wikipedia.org/wiki/Earth_radius

   Earth radius (denoted as R 🜨 or R E) is the distance from the center of Earth to a point on or near its surface. Approximating the figure of Earth by an Earth spheroid (an oblate ellipsoid), the radius ranges from a maximum (equatorial radius, denoted a) of nearly 6,378 km (3,963 mi) to a minimum (polar radius, denoted b) of nearly 6,357 km (3,950 mi).