Diket. tabung r = 7 cm t = 15 cm luas permukaan tabung dan 1/2 lingkaran adalah
rashasya
Lp tabung = 2 p r (r+t) =2 . 22/7 . 7 (7+15) =44 . 22 =986
Lp bola = 1/2 4 p r^ =1/2 . 4 . 22/7 . 7 . 7 = 308
Lp = Lptabung +Lpbola = 968 + 308 = 1274
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salsabilamumtaza
Luas permukaan tabung: (2 x vr2) + (2vr x t) 2 x 22/7x2 + 2 x22/7 x 15 = 2x 22/7x7 x (7+15) = 44x 22 = 968 - hasilnya (maaf kalau saya salah)
= 2 p r (r+t)
=2 . 22/7 . 7 (7+15)
=44 . 22
=986
Lp bola
= 1/2 4 p r^
=1/2 . 4 . 22/7 . 7 . 7
= 308
Lp = Lptabung +Lpbola
= 968 + 308
= 1274
2 x 22/7x2 + 2 x22/7 x 15
= 2x 22/7x7 x (7+15)
= 44x 22
= 968 - hasilnya (maaf kalau saya salah)