yang pandai matematika tolong jawab yaa

t = 15 cm
r = 7 cm

Luas selimut tabung
= 2 x π x r x t
= 2 x 22/7 x 7 cm x 15 cm
= 660 cm²

Luas permukaan tabung
= 2 x π x r ( r + t )
= 2 x 22/7 x 7 cm ( 7 cm + 15 cm )
= 44 cm x 22 cm
= 968 cm²