a. L. segitiga = a x t : 2
= (20-6) x 8 : 2 = 14 x 4 = 56 cm²
b. L. segitiga = a x t : 2
= 20 x 8 : 2 = 80 cm²
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a. L. segitiga = a x t : 2
= (20-6) x 8 : 2 = 14 x 4 = 56 cm²
b. L. segitiga = a x t : 2
= 20 x 8 : 2 = 80 cm²