Question

Kayak mana caranya bantu dong??.?

Answer 1

Pakai perbandingan.

1. lebar slide = 36mm
tinggi slide = 24mm
lebar layar = 2,16m = 2160mm
tinggi layar = ? = x

lebar slide / tinggi slide = lebar layar / tinggi layar
36/24 = 2160/x = 24×2160:36 = 1440mm = 1,44 m tinggi layar

2. bisa pakai phytagoras, bisa pakai perbandingan.
perbandingan :

AB/ AC = PR/PQ
8/AC = 4/3 = 8×3:4 = 6 cm (AC)
AB/BC = PR/QR
8/10 = 4/QR = 10×4:8 = 5 cm (QR)

phytagoras : a²+b²= c²(sisi miring)

∆ABC
AC² + 8² = 10²
AC² = 10²-8²
AC²= 100-64
AC² = 36
AC = √36 = 6 cm

∆PQR
3²+ 4² = QR²
9+16 = QR²
25 = QR²
√25 = QR = 5 cm

3. TS/RS = ML/KL
TS/15 = 4/6 = 15×4:6 = 10 cm