Jawabanmu

2014-05-30T18:56:22+07:00
Gl2=j2-(r1-r2)2 gl2=25 2-(10-3)2 gl2=625-(7)2 gl2=625-49 gl2=√576 gl=24 cm
2014-05-30T18:58:43+07:00
( R - r )  = J2O - Gl
( 10 - 3 ) = 25 2 - Gl
7 = 625 - Gl
Gl = 625 - 49
     = √ 576
     = 24