Question

Tolong dijawab dengan caranya. cepat ya...

Answer 1

Verified answer

Tinggi tangki = 14cm

V. tabung = πr²t
2156 = 22/7×r²×14
2156 = 44r²
r² = 2156/44
r² = 49
r = √49
r = 7

jari jari = 7cm
tinggi = 14cm

luas tabung = 2πr(r+t)
= 2×22/7×7(7+14)
= 44 × 21
= 924cm² ➡ C

semoga membantu

Answer 2

V = phi.r².t
2156 = 22/7. r². 14
2156 = 44. r²
r² = 2156/44
r = √49
r = 7
LP tabung : 2phi r (r + t)
2 . 22/7. 7 (7+14)
44 . 21
924 cm ²
jadi, hasilnya adalah 924 cm².