

Volume Bola Kelompok Sita 9.5
Presentation
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Nela Rasmidi
Used 1+ times
FREE Resource
8 Slides • 0 Questions
1
2
Apa itu 'bola' ?
Jadi
3
2.Memiliki 1 sisi
4.memiliki 1 titik pusat
1.Tidak memiliki rusuk
3.Tidak memiliki titik sudut
6.Sisi pada bangun ruang bola disebut
dinding bola
5. Memiliki diameter dan jari jari
4
Mari melakukan
percobaan!
•Alat dan bahan:
1.Satu buah bola
2.Satu buah tabung
3.Cutter
4.Pasir yang telah dicuci
• Langkah langkah:
1. Belah bola menjadi dua.
2. Masukkan pasir kedalam tabung sampai
penuh, menggunakan bola yang telah dibelah.
"Dalam satu tabung,dapat berapa yaa?"
5
Pembuktian Rumus!
Dari percobaan tadi kita dapat
menyimpulkan!
Bahwa...
Mari Menyimak!
V tabung=3×V½ bola
V tabung=Luas alas × tinggi
V tabung=π.r².t
πr².2r=3×V½ bola
V½ bola=π.r².2r/3
V½ bola=⅔.π.r³
V bola=2.⅔π.r³
Jadi,rumus Volume bola adalah=4/3.π.r³
6
Mari menyelesaikan soal bersama
Perhatikan dengan baik ya!
selamat mengerjakan ^w^
7
Latihan Soal!
Hitunglah volume bola,jika
diketahui jari jarinya adalah
14cm
Hitunglah
volume
bola,jika
diketahui diameternya adalah
56cm
hitunglah
Volume
bola
jika
diketahui diameternya adalah
70cm.
Hitunglah
volume
bola
,dimana
jari
jarinya
adalah 7 cm
8
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