Diketahui luas belah ketupat ABCD=480 CM2.Jika panjang diagonal AC=20Cm,keliling belah ketupat ABCD Adalah....cm A.120 B.104 C.96 D.48
nallsst
Luas = x diagonal1 x diagonal2 480 = x 20 x diagonal2 480 = 10 x diagonal2 diagonal2 = diagonal2 = 48 cm sisi belah ketupat = = = = = = 26 cm Keliling = 26 + 26 + 26 + 26 = 104 cm
480 = x 20 x diagonal2
480 = 10 x diagonal2
diagonal2 =
diagonal2 = 48 cm
sisi belah ketupat =
=
=
=
=
= 26 cm
Keliling = 26 + 26 + 26 + 26
= 104 cm