tolong dong plis bantuiin

Luas selimut = 2 x phi x r x t
1320 = 2 x 22/7 x r x 15
1320 = r x 660/7
r = 9240/660
r = 14

volume tabung = phi x r x r x t
= 22/7 x 14 x 14 x 15
= 22 x 2 x 14 x 15
= 9240
Maaf jika salah