home *** CD-ROM | disk | FTP | other *** search
/ Eyewitness: Encyclopedia of Science / Mac_DorlingKindersley_EyewitnessEncyclopediaOfScience.iso / mac / MATH / SOFI / SOFI000P.DIB (.png) < prev    next >
Bitmap Image  |  1995-06-29  |  86.6 KB  |  510x394  |  8-bit (107 colors)  |  [TEXT/LMAN]
   ocr: SPHERES Half a sphere SPHERE isa solid figure that is Acircular in cross section. All points on the surface ofa asphere are equidistant (an equal distance) from the center. The distance from the center to the surface is known as the radius (r) ofas sphere. The Greek mathematician Archimedes (287 BC -212BC) used pi (JC) to develop the following formulas for finding the surface area and volume ofa sphere: Surface sphere area 4Tr 2 ofa 4 - A ) Volume of asphere 3Tr Radius (r) Cross section