Page 9

4. Limas Beraturan

Volume = 1/3 (L. Alas x t)

Luas s = n x L. sisi tegak

9. Limas Beraturan Terpancung

Volume = 1/3 h (A+√AB+B)

Luas s = n x luas sisi tegak

Ket : n = segi pd alas h= tinggi

A=luas atas B=luas bawah

5. Tabung

Volume = L. Alas x t Luas s = Kell. Alas x t

10. Tabung Terpancung

Volume = 1/8 (i1+i2)d2

Luas s = ½ (i1+i2)d

Ket : h = tinggi rata2 = ½ (i1+i2)

6. Kerucut

Volume = 1/3(L. Alas x t ) Luas s = rs

7. Kerucut Terpancung

Volume = 1/3t(r2+rR+r2) Luas s = a(R+r)

Ket : a = panjang grs miring r = jari2 kecil

R = jari2 besar t = tinggi

Page 8

VOLUME

1. Kubus

Volume = s3 Luas Selimut = 4s2

7. Bola

Volume = 4/3 (r3) Luas s = 4r2

2. Balok

Volume = p.l.t Luas Selimut = 2 (pt+lt)

3. Prisma Tegak Beraturan

Volume = L. Alas x t Luas s = Kll. Alas x t

8. Prisma Tegak Beraturan Terpancung

Volume = 1/n (l1+l2+....ln). L alas

Luas s = 1/n (l1+l2+....ln). Kll. Alas

Ket : n = segi n l = rusuk tegak

Page 7

Luas Daerah Bidang Beraturan

1. Rumus Pythagoras

c2 = a2+ b2

6. Belah Ketupat

Luas = ½ (d1 x d2)

d = diagonal

2. Segi Tiga

Luas = ½ ( a x t )

t = tinggi

a = alas

L = 1/2 x a x b x

7. Layang-layang

Luas = ½ (d1 x d2)

d = diagonal

3. Bujur Sangkar (Persegi)

Luas = s x s

s = sisi

8. Jajaran Genjang

Luas = a x t

a = alas

t = tinggi

4. Persegi Panjang

Luas = p x l

p = Panjang

l = lebar

9. Lingkaran

Luas = r2

= ¼ d2

r = Jari-jari

d = diameter ( 2r )

5. Trapesium

Luas = ½ (a + b) t

t = tinggi

a = sejajar b

10. Segi n Beratuan

L = ¼ ( n.s2.Tg )

n = banyak segi

s = panjang sisi

= 360 /n

Filename: RUMUS MATEMATIKA Directory: C:\Users\wiranto\Documents Template:

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Title: Bab Subject: Author: wiranto Keywords: Comments: Creation Date: 11/12/2010 10:39:00 Change Number: 18 Last Saved On: 09/10/2011 12:09:00 Last Saved By: wiranto Total Editing Time: 506 Minutes Last Printed On: 09/10/2011 12:40:00 As of Last Complete Printing Number of Pages: 9 (approx.) Number of Words: 1.012 (approx.) Number of Characters: 5.773 (approx.)