Jawabanmu

2014-05-29T15:37:06+07:00
Gs= 24 cm
r= 9-2= 7 cm
jarak = 25 (pake teori phytagoras)
2014-05-29T15:41:42+07:00
Diket: R = 9
r = 2
pgspl = 24
jp = ?
jp'2= pgspl'2 + (R-r)'2
=24'2 + (9-2)'2
= √576 + 49
= √625
= 25 cm