Jawabanmu

2014-09-04T15:36:20+07:00
Luas selimut (Ls) = phi × r × t × 2
1320 = 22/7 × r × 15
R = 1320 / 22/7 / 15
= 1320 × 7/22 × 1/15
= 28 cm
Maaf kalau salah.....