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Verified answer
Luas segitiga ABE=1/2 . a . t
= 1/2 . 16 . 8
= 64 cm2
luas persegi panjang
= 16 x 8
= 128 cm2
luas yg diarsir
= 128 - 64
= 64 cm2
L = (S^2 : 4)√3
L = (16^2 : 4)√3
L = (256 :4)√3
L = 64√3 cm^2