Jawabanmu

Jawaban paling cerdas!
2014-03-05T21:52:11+07:00
L permuakaan = 2 L Trapesium + 2 x 10 x 4 + 2 x 14 x 4
                     = 2 (1/2 x (8 + 14) x 4) + 80 + 112
                     = 88 + 192 = 280 cm²
2 3 2