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Jawaban:
7. A. L = s×s
= 9 × 9 = 81 cm²
B. L = p×l
= 12× 4
= 48 cm²
8. A. Volum = 1/3 × La × t
= 1/3 × p×l×t
= 1/3 ×17×14×21
=1/3 ×4.998
= 1.666 cm3
B. Volum = La×t
= 1/2×c×d×t
=1/2 ×3×4×10
=1/2×120
=60 cm3
9. A. L Bangun | = persegi
L = s×s
= 10×10 = 100 cm²
L Bangun || = persegi panjang
L = p×l
= 15× 23 = 345 cm²
Ditanya V?
V = L | + L ||
= 100 cm ² + 345 cm ²
= 445 cm3
Jdi V = 445 cm3
Smoga membantu ...
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