Question

Jawab Petanyaan di bawah ini!
Yang Uji Keterampilan 4

Answer 1

Jawaban no.2
rumus=π x r pangkat 2 x r
=3,14 x4x30
=1.256x 6/5
=7.536: 5 : 157,2
jawaban no.3
rumus= p x l x r
=10 x 5 x 6 = 50 x 6 = 300

Answer 2

1. luas prisma
= 2 × (p×l) +(p×t) + (l×t) : 2
= 2 × (10 × 3) + (10 × 4) + (3 × 4) : 2
= 2 × (30 + 40 + 12) : 2
= 2 × 82 : 2
= 164 : 2
= 82 cm2
2. luas tabung
= keliling alas × tingi
= (3,14 × 8) × 30
= 25,12 × 30
= 753,6 cm2
3. luas balok
= 2 × (p×l) + (p×t) +(l×t)
= 2 × (10 × 5) + (10 × 6) + (5 × 6)
= 2 × (50 + 60 + 30)
= 2 × 140
= 280 cm2
4. kurang tau
5. luas kubus
= 6 × (s × s)
= 6 × (4 × 4)
= 6 × 16
= 96 cm2
6. luas limas
= 4kali luas segitiga + luas alas
= {2 × [(10 × 8 : 2) + (5 × 9 : 2)] + (10 × 5)}
= {2 × [(10 × 4) + (45 : 2)] + 50}
= 2 × (40 + 22,5) + 50
= 2 × 62,5 + 50
= 125 + 50
= 175 cm2
maaf kalau salah... semoga membantu :)