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lebar = 2.16m = 2160mm
36x=24×2160
36x=51840
x=51840 ÷ 36
x=1440 mm
1440 mm = 1.44 m
jadi, tinggi layar tsb adalah 1.44 m
no. 2
ac ab
pq pr
= (x/3) (8/4) ---> dibaca x per 3 = 8 per 4
=4x = 8×3
4x = 24
x = 24÷4
x = 6