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= 2(12+9)
= 2.21 = 42
banyak tiang lampu = keliling = 42 = 14 tiang lampu
jarak 3
biaya yang diperlukan = 14 x Rp 800.000
= Rp 11.200.000 (c)
26. Tinggi gedung = bayangan gedung
tinggi setting bayangan setting
tg = 24
2 0.15
tg = 24/0,15 X 2
tg = 32m
27. angkanya gajeas
28. c DE
maaf cuma bisa bantu segitu aja ya :)
L trapesium = (34+22). 8 / 2 = 224 cm²
Jadi luas bangun = 240 + 224 = 464 cm² (c)
23. Keliling = 2 (p+l)
= 2 (12+9)
= 2 (21)
= 42 m
Banyak tiang lampu = 42 / 3 = 14 tiang
Biaya untuk memasang tiang lampu = 14 x Rp. 800.000
= Rp. 11.200.000 (c)
25. b √52
26. Tinggi gedung 24/ 1,5 . 2 = 32 m (a)
27. 180⁰ = 5x - 40
220⁰ = 5x
44⁰ = x
Sdut PQS = 2x - 45
= 2.44 - 45
= 43⁰ (b)
28. c. DE