Blh mnta tlg ajarin ga?soalnya bsk d kumpulkan trma kasih

5. Luas selimut tabung = 2x phi x r x t
=2 x 22/7 x 14 x 20
= 1760 cm2

c. 1760 cm2

6. Volume tabung = phi x r^2 x t
2156 = 22/7 x r^2 x 14
2156 = 44 x r^2
r^2 = 2156/44
r^2 = 49
r = √49
r = 7 cm

Luas permukaan tanki =
2 x phi x r(r+t)
= 2 x 22/7 x 7 (7+14)
=44 x 21
= 924 cm2

b. 924 cm2