Hart, C. A. (Clara Avis), b. 1863, Feldman, Daniel D., b. 1872 · New York, American Book Co · leaf 463
area is J^, i.e. -i-of the entire surface of the sphere. On the sphere whoseradius is 6 inches, the area of the given triangle will be \ of144 TT square inches, i.e. 16 tt square inches. The followingtheorems are for the purpose of determining the areas of figureson the surface of a sphere in terms… … Q E
Geometry, Plane · Geometry, Solid
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-390-149.webp)