luas perm = 2(pl+pt+lt)
468 = 2(4x. 3x + 4x. 2x + 3x.2x)
234 = 12x²+8x²+6x²
234 = 26x²
9 = x²
3 = x
tinggi = 2x = 2(3) = 6
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luas perm = 2(pl+pt+lt)
468 = 2(4x. 3x + 4x. 2x + 3x.2x)
234 = 12x²+8x²+6x²
234 = 26x²
9 = x²
3 = x
tinggi = 2x = 2(3) = 6