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60 = 1/2 x 8 x d 2
60 = 4 x d.2
d.2 = 60 : 4= 15
6. tak tau.
7. L layang2 = 1/2 x d1 xd2
= 1/2 x (20-8) x 16 = 1/2 x 12 x 16 = 6 x 16 = 96 cm
..maap nk salah
Mengingat luas layang-layang:
Maka,
Panjang diagonal yang lain adalah 15 cm
Nomor 6.
Berikan permisalan:
AC = 1½ BD
AC = 3/2 BD
BD = 2/3 AC
Sehingga:
Nomor 7.
L = Luas I - Luas II