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=200 cm²(d)
25. luas yg tidak diarsir = 1/2 x (8 + 24) x 6
=1/2 x 32 x 6
= 96
luas seluruhnya = 32 x 12 = 384 cm
luas yg diarsir = 384 - 96
= 288 cm² (a)