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Tips.
Luas ABCD = AB x BC
60 = 10 x BC
BC = 60/10
BC = 6 cm, alias lebar = 6 cm
Maka,
Luas BCGF = BC x CG
24 = 6 x CG
CG = 24 / 6
CG = 4 cm, alias tinggi = 4 cm
Sehingga,
Lp = 2(pl+pt+lt)
Lp = 2(10.6+10.4+6.4)
Lp = 2(60+40+24)
Lp = 2 x 124
Lp = 248 cm²
60 = 10 × BC
60/10 = BC
6 = BC
luas BCGF = BC × CG
24 = 6 × CG
24/6 = CG
4 = CG
LUAS PERMUKAAN BALOK = 2 (p×l+p×t+l×t)
= 2 (10×6 + 10×4 + 6×4)
= 2 (60 + 40 + 24)
= 2 × 124
= 248 cm²