Jawabanmu

2014-09-03T09:37:50+07:00
3 : 5 = 4,5 : a
kalikan silang
3a = 22,5
a = 7,5
panjang PR = 7,5
1 5 1
Jawaban paling cerdas!
2014-09-03T10:25:55+07:00
5/x = 3/4,5
3x = 4,5 . 5
3x = 22,5
x = 22,5 : 3
x = 7,5

jadi, pr = 7,5
2 5 2