2. CYLINDER
Definition of Cylinder
• A Cylinder is a three-dimensional geometric figure
that has two congruent and parallel bases.
Definisi Tabung
• Cylinder adalah benda geometris tiga dimensi yang
memiliki dua alas kongruen dan sejajar

3. CYLINDER
A solid object with:
* two identical flat
ends that are circular
or elliptical
* and one curved
side.
It has the same cross-
section from one end
to the other.

4. Example Of Cylinder
Cookies
Toples Money Box
FIRE
BOOTLE
EXTINGUISHER

5. Curve Surface area
r = CS
= 2 rh
2 h

6. Pattern
V= h
Surface Area
= 2 r (r+h)
2 r

7. Exercise
1. Given that :
h = 7 cm, r = 7 cm
Find :
a. The Volume of cylinder
b. The surface area of cylinder

8. Answer
1. Known height : 7 : 22
radius : 7 7
a) Volume = h
= 22 . 7.7.7
7
= 1078

9. b) SA = 2 r (r + h)
= 2 . 22 . 7 (7 + 7)
7
= 44 . 14
= 616

10. 2. Find the radius of Cylinder if given that the area
of curved surface is 792 and the height is 21
cm
r = CS known : CS : 792 cm
2 h h : 21 cm
= 792
2.22.21
7
= 792
1323
= 6 cm

11. 3. Find the Volume of a Cylinder with a
diameter of 14 cm and height of 35 cm
Known d : 14 cm r : 7 cm
h : 35 cm
V= h
= 22. 7.7.35
7
= 5390

12. 4. Find the height, given that Surface area 9856
the radius 28cm..
Answer : known : SA = 440
r = 27 cm
Asked : h ?
7
= 28 cm