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alas bawah = 14
sisi = 13
Ditanya : L = ?
t = ?
t² = √13² - 5²
= √169 - 25
= √144
= 12 cm
L1 = (10 + 14) x 12 x 1/2
= 24 x 6
= 144
L2 = 12 x 5 x 1/2
= 6 x 5
= 30
L = 144 - 30
= 114 cm²