The document discusses properties of cylinders, cones, and spheres. It identifies the key elements of each shape, such as the curved surface and base of a cylinder. It provides examples of how to calculate the surface area and volume of these 3D shapes. The document also gives practice problems involving finding surface areas and dimensions of cylinders based on other given properties.

1. (BANGUN RUANG SISI LENGKUNG)

2.  2. Understanding properties of cylinder, cone and
sphere, and find its size
 2.1 Identify elements of cylinder, cone and sphere
 2.2 Counting surface area and volume of cylinder,
cone and sphere
 2.3 Problem solving which related by cylinder, coe
and sphere

3. 2.1 Identify elements of cylinder, cone and
sphere
2.2 Counting surface area and volume of
cylinder, cone and sphere
2.3 Problem solving which related by cylinder,
coe and sphere

5. Top / lid of cylinder
Right face/blanket /curved
surface
Based of cylinder

6. Area of top+base
=2πr2.

8.  Curved surface = area of rectangle
 l = perimeter of circle
 Wide = height of cylinder

9.  1. Given that :
h = 15 cm, r = 7 cm
Find :
a. The area of curved surface
b. The surface area of cylinder

10. a) . The area of the curved surface
b) . The surface area of the cylinder
3. Find the height of cylinder if gifen that the area of
the curved surface is 880 cm², the base diameter
is 14 cm.
4. Find the heght of a cylinder whose base radius is
15 cm, surface area is 5, 181 cm².

11.  a). The base radius
 b). The height of the Cylinder
6. The area of the curved surface of a cylinder is
251.2 cm². If the ratio of the base radius to the
height is 2 :5, find :
a) Base radius
b) The height of cylinder.

12.  Buku Pelajaran MATEMATIKA Bilingual
 Untuk SMP/MTs Kelas IX
 Penulis :
 Suwah Sembiring
 Cucun Cunayah
 Ahmad Zaelani

13.  Inch by inch MATH is CINCH
 But
 Yard by Yard Math is so very HARD
 Let’s practice as often as possible, don’t be bored