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Verified answer
Diketahui:DC = a = 10 cm
b = 14 cm
t = 6 cm
L = (a+b)t/2
L = (10+14)6/2
L = (28).3
L = 84
L = 1/2 × (AB + DC) × t
L = 1/2 × (14 + 10) × 6
L = 1/2 × 24 × 6
L = 72 cm^2