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1.SURFACE AREA OF A SPHERE
http://www.asset.asu.edu/new/mathactive/lessons/259/interface.swf
2.The formula of the surface area of the sphere
3.VOLUME OF A SPHERE, HOW TO GET THE FORMULA
4.VOLUME OF A SPHERE
http://www.asset.asu.edu/new/mathactive/lessons/256/look.swf
5.Now enjoy singing this song
http://www.harcourtschool.com/jingles/jingles_all/1what_am_i.html