BRSL KELAS 9

PEMBELAJARAN MATEMATIKA SMP

PENGENALAN BANGUN RUANG

By Wiji tri

Benda Dalam Matematika

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​Ada 2 macam :

1.Bangun datar

2.Bangun ruang

1. Segitiga

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2. Segi empat

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3. Lingkaran

​Contoh :

1. Bangun Datar

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2. Bangun Ruang

Macam-macam Bangun Ruang

1. Balok

2. Kubus

3. Tabung

4. imas

5. Kerucut

6. Bola

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Volume Balok

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​Vol = 3 x 2 x 2

Vol = p x l x t

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Volume Balok​

​

​Vol = p x l x t

Kubus

Ciri-ciri Kubus:

​a.  12 rusuk

b.   6 Bidang sisi berupa persegi

c.   8 pojok

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​V Kubus = sxsxs

= s​3

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​Tabung

​•Ciri-ciri Tabung :

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a.  2 rusuk

b.  3 Bidang sisi berupa 2 lingkaran dan selimut    tabung

c.  Selimut tabung berbentuk persegi