tolong jawab....pakai cara ya wajiib
1.
perbandingan tinggi andra : seno = 13 : 14
tinggi andra = 169 cm
tinggi seno =
[tex] \frac{14}{13} \times 169 \\ = 182[/tex]
selisih tinggi andra dan seno =
[tex]182 - 169 \\ = 13cm[/tex]
2.
harga = 82.000
diskon = 25%
total yg dibayar=
[tex] 82.000 \: - 82.000 \times 25\% \\ 82.000 - 82.000 \times \frac{25}{100} \\ 82.000 - 20.500 \\ 61.500[/tex]
3.
p di gbr = 10 cm
p asli = 25 m = 2500 cm
l asli = 15 m = 1500 cm
skala = 10 : 2500 = 1 : 250
l di gbr = 1/250 x 1500 = 6 cm
keliling taman pd gbr
= 2(p +l) = 2(10+6)
= 2 × 16
= 32
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