jawab ya plssssssssssssss...
Jawab: 376 cm²
Penjelasan dengan langkah-langkah:
L ABCD = ½ x (a+b) x t
= ½ x (12+20) x 16
= 256 cm²
t Δ ADE = √17²-8²
= √289-64
= √225 = 15 cm
L ADE = ½ x a x t
= ½ x 16 x 15
= 120 cm²
L ABCDE = 256 + 120 = 376 cm²
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