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Jawaban : persegi nomor 6
Nomor 6.
L = πr²
= 22/7×(0,7 m)²
= 22/7×0,49 m²
= 1,54 m²
Jawaban : 1,54 m²
Nomor 7.
2x(x+2)-4(x+2) = (2x-4)(x-2)
Jawaban : (2x-4)(x-2)
Nomor 8.
∠siku-siku = 90°
Jawaban : 90°
Nomor 10.
-3x+4y=12
m = -a/b
= -(-3)/4
= 3/4
Jawaban : 3/4
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