1. created by ruhe

2. created by ruhe

3. LUAS PERMUKAAN TABUNG
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4. LUAS SELIMUT TABUNG
2 r t
Dimana,
r = jari – jari tabung
t = tinggi tabung
created by ruhe

5. Luas selimut tabung = 2 rt
= 2 x 3,14 x 9 x 17
= 960,84 cm2
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6. LUAS PERMUKAAN TABUNG
2 r2 + 2 rt
atau
2 r(r + t)
Dimana,
r = jari – jari tabung
t = tinggi tabung
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7. a.Luas selimut tabung = 2 rt
1320 = 2 x 22/7 x r x 15
1320 = 44/7 x r x 15
1320 = 660/7 x r
r = 1320 : 660/7
r = 1320 x 7/660
r = 14created by ruhe

8. Luas permukaan tabung = 2 r(r + t)
= 2 x 22/7 x 14 x ( 14 + 15)
= 88 x 29
= 2552
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9. Luas permukaan tabung tanpa tutup = luas alas + luas selimut
791,28 = r2 + 2 rt
791,28 = 3,14 x62 + 2 x 3,14 x 6 x t
791,28 = 3,14 x 36 + 37,68t
791,28 – 113,04 = 37,68t
678,24 = 37,68t
t = 678,24/ 37,68
t = 18
created by ruhe

10. created by ruhe

11. LUAS PERMUKAAN KERUCUT
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12. Dimana,
R = jari-jari alas kerucut
t = tinggi kerucut
rs
LUAS SELIMUT KERUCUT
𝑺 = 𝒓 𝟐 + 𝒕 𝟐
Garis
pelukis
created by ruhe

13. LUAS PERMUKAAN KERUCUT
r2 + rs
atau
r(r + s)
Dimana,
r = jari – jari kerucut
t = tinggi kerucut
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14. Panjang garis pelukis dinyatakan dengan s
a. S2 = r2 + t2 = 32 + 42= 9 + 16 = 25
S = 25 = 5
Luas selimut kerucut = r s
=3,14 x 3 x 5
= 47,1 cm2created by ruhe

15. Luas permukaan kerucut
= luas selimut + luas alas
= rs + r2
= 3, 14 x 3 x 5 + 3,14 x 3 x 3
= 47,1 + 28,26
=75,36 cm2
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16. created by ruhe

17. LUAS PERMUKAAN BOLA
created by ruhe
4 r2

18. Luas permukaan bola
= 4 r2
= 4 x 22/7 x 7 x 7
=88 x 7
= 616 cm2created by ruhe

19. L = 4 r2
1256 = 4 x 3,14 x r2
1256 = 12,56 x r2
r2 = 1256/12,56
r2 = 100
r = 10
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20. Jajalin
Hal 98-99
PG
No. 1, 3, 8, 9, 16
di kertas selembar
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21. r2t
VOLUME TABUNG
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22. V = r2t
= 22/7 x 7/2 x 7/2 x 10
= 385 cm3
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23. V = r2t
770 = 22/7 x 7 x 7 x t
770 = 22 x 7 x t
110 = 22 x t
t = 110/22 = 5 cm created by ruhe

24. r2t
VOLUME KERUCUT
Garis
pelukis
created by ruhe
1
3

25. V = 1/3 r2t
= 1/3 x 22/7 x 7/2 x 7/2 x 15
= 192,5 cm3
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26. V = 1/3 x r2t
462 = 1/3 x 22/7 x r2 x 9
462 = 22/7 x r2 x 3
462 = 66/7 x r2
r2 = 462 x 7/66
r2 = 49
r = 7
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27. r3
VOLUME BOLA
created by ruhe
1
3
4
3