✨Quiz✨
-Rules
•Jangan nyawab ngasal (Report)
•Harus Pakek cara
•Pakek cara + benar (jawaban tercerdas)
*Soal kelas 7 - 9 SMP
#Habisin-1000-poin
-Rules
•Jangan nyawab ngasal (Report)
•Harus Pakek cara
•Pakek cara + benar (jawaban tercerdas)
*Soal kelas 7 - 9 SMP
#Habisin-1000-poin
Penjelasan dengan langkah-langkah:
penjelasan terlampir
Nomor 39
Volume ½ Bola
- ½ × 4/3 × πr³
- ½ × 4/3 × π × ( 10 ÷ 2 )³
- 4/6 × π × ( 5 )³
- ( 4/6 ÷ 2/2 ) × π × 5³
- ⅔ × π × 5³
- ⅔ × π × ( 5 × 5 × 5 )
- ⅔ × 125 × π
- 250/3 × π
- 83,33π
Volume Tabung
- πr² × t
- π × ( 10 ÷ 2 )² × 18
- π × 5² × 18
- π × ( 5 × 5 ) × 18
- π × 25 × 18
- 450π
Volume kerucut
- ⅓πr² × t
- ⅓ × π × ( 10 ÷ 2 )² × 9
- 1 × π × 5² × 3
- π × ( 5 × 5 ) × 3
- π × 25 × 3
- 75π
Volume gabungan
- Volume ½ Bola + Volume Tabung + Volume Kerucut
- 83,33π + 450π + 75π
- ( 83,33 + 450 + 75 )π
- ( 533,33 + 75 )π
- ( 608,33 )π
- 608,33π cm³
__________________________
Nomor 40
v = πr² × t
47,1 = 3,14 × 10² × t
( 47,1 × 1000 ) = 3,14 × ( 10 × 10 ) × t
47.100 = 3,14 × 100 × t
47.100 = 314 × t
314t = 47.100
[tex]t = \frac{47.100}{314} [/tex]
[tex]t = 150 \: cm \: (d)[/tex]
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