Jawabanmu

2014-03-07T23:32:08+07:00
Rluar = abc/4L
=8×15×17/4×8×15×(1/2)
=8.5cm
8 4 8
2014-03-07T23:45:49+07:00
R luar lingkaran= ABC/4L
= 8×15×17/2×8×15
= 8.5cm
5 3 5