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Tolong tulisannya rapi dan jelas, jawabannya benar, pake cara kerja, dan sesuai rumus
1. V = Luas alas × tinggi
= ½ × a × t × t
= ½ × 15 × 18 × 56
= 135 × 56
= 7560 cm³
2. V = Luas alas × tinggi
= ½ × a × t × t
5616 = ½ × 24 × 18 × t
5616×2 = 432.t
11.232/437 = t
t = 26 cm
3. V = Luas alas × tinggi
= ½ × a × t × t
7000= ½ × a × 25 × 28
7000×2 = a × 25 × 28
14000 = a × 700
a = 14000/700
a = 20 cm
4. V = Luas alas × tinggi
= ½ × a × t × t
= ½ × 12 × 16 × 25
= 4800/2
= 2400 cm³
• Sisi miring
=√12² + 16²
=√144 + 256
=√400
=20
Lp = t (Kel.alas) + (2× L.alas)
= 25 ( 20 + 12 + 16) + (2× 12×16/2)
= 25 (48) + 192
= 1200 + 192
= 1392 cm²
5. Lp = (2×½×16cm×30cm) + 18cm (30cm+16cm+34cm)
= 480cm² + (18cm×80cm)
= 480cm² + 1440cm²
= 1920 cm²
