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L =
=22/7 x 10 x 10 + 2 x 22/7 x 10 x 15
= 22/7 x 100 + 22/7 x 2 x 22/7 x 150
= 314,2 + 942,8 = 1257 cm2
tp dsana gakada jwbnnya ya, yg ada cuma yg mendekati aja yaitu 1256 cm2
entahlah