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jadi tinggi adalah 12 cm
jadi = 1/2 .a .t
= 1/2 * 8cm * 12 cm
= 48cm2
tinggi = 3/2 x 8 = 12 cm
luas
= 1/2 x alas x tinggi
= 1/2 x 8 x 12
= 48 cm pangkat 2