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AO : 1/2 AC = 1/2 × 96 = 48 cm
keliling = 208 cm
4 × AB = 208
AB = 52
BO = √52² - 48²
√2.704 - 2.304
√400 = 20
BD = 2 × 20 = 40
luas belah ketupat = 1/2 × 96× 20 = 1920 cm²
sisi = 208/4 = 52cm
=
= 2704 - 2304
= 400
x =
x = 20cm
maka diagonal1 = 96 dan diagonal2 = 40
jadi, luas belah ketupat ABCD = diagonal1 X diagonal2 / 2 = 96 X 40/2 = 1920
semoga membantu;;) jika berkenan berikan ucapan terimakasih dan terbaiknya:)