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= (2 x phi x r x t) + (phi x r^2)
=(2 x 22/7 x 3,5 x 10) + (22/7 x 3,5^2)
= 220 + 38,5
= 258,5 cm2
L.a.tabung 2= phi x r^2
= 22/7 x 7^2
= 154 cm2
= 154 - 38,5
= 115,5 cm2
L.p.t 2= L.s.t + L.a.tabung
= (2 x phi x r x t) + 115,5
= (2 x 22/7 x 7 x 10) + 115,5
= 440 + 115,5
= 555,5 cm2
L.p.t.seluruhnya= L.p.t 1 + L.p.t 2
= 258,5+ 555,5
= 814 cm2
maaf kalo jawabannya salah