berapa luas permukaan tabung

r = 14 ÷ 2 = 7


LP. tabung = 2 x phi x r x (r + t)
= 2 x 22/7 x 7 x (7 + 30)
= 2 x 22 x 37
= 1.628

*Semoga membantu :):):):):):):)*