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12*8 = 96 cm
Maaf, kalau ada salah.
2 : 3
d1 = 8
Ditanya: a. d2 = ?
b. L = ?
a. 2/3 = 8/d2
2 x d2 = 8 x 3
2d2 = 24
d2 = 24/2
d2 = 12
jadi panjang diagonal 2 = 12cm
b. Luas = 1/2 x d1 x d2
= 1/2 x 8 x 12
= 1/2 x 96
= 48 cm
jadi luas layang layang tsb adalah 48 cm