Page 60 - Inovasi Modul Matematika Bangun Datar Segi Empat_Lusi Malini_Neat
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48 = 4x + 8
4x = 48 – 8
4x = 40
x = =
2. Diketahui : Keliling = 52 cm
d = Panjang AC = 10 cm
1
Ditanya : luas ?
Jawab :
AO = OC = = = 5
s = AB = BC = CD = DA = = =
BO = OD = √
= √ 5 = √ 69 5 = √ 44 =
d = panjang BD = 2 x BO = 2 x 12 cm = 24 cm
2
L = . . = . . 4 =
3. Diketahui : d : d = 4 : 3
2
1
d = 4x
1
d = 3x
2
58
Bangun Datar Segiempat - VII