1. The document lists the names and student IDs of 6 students. 2. It provides definitions and formulas for calculating the surface area and volume of cylinders. Examples of calculations for the surface area and volume of cylinders with given radii and heights are shown. 3. Formulas and explanations for calculating the area of circles and sectors are provided, along with examples of calculations.

1. 1. Yang Jing Loo 0323066
2. Soo Yon Li 0322821
3. Goh Song Kit 0322013
4. Cherilyn Chia 0321986
5. Chan Yi Fung 0323057
6. Lim Hong Wei 0322741

2. - It has 2 circular faces (top & bottom)
- It has one curved side
- It is not a polyhedron as it has a curved surface

3. Surface Area = 2πr(r+h)
Which is made up of:
 Surface area of circular base = πr²
 Surface area of curved surface = 2πr x h

4. Surface Area = 2πr(r+h)
= 2π(7)(2+7)
= 2π(7)(9)
= 126π
≈ 395.892
If the height(h) is 2, and the radius(r) is 7, find the surface
area of the cylinder.

5. Volume = πr²h
Just multiply the area of the base by the height of the cylinder:
- Area of the base: πr²
- Height: h
- Volume = Area × Height = πr² x h

6. How to remember: Volume = pizza
Imagine that you just made a pizza,
z = radius, a = height, find the volume of the pizza.

7. Volume = πr² x h
Volume = 22/7(2²)(6)
= 75.429cm³
Given that the radius is 2 and a height is 6, find the
volume.

8. Volume= πr² x h
Volume =22/7(3²)(5)
=141.428cm³
What is the volume of the cylinder with a radius of 3
and a height of 5?

9. What is a circle?
•A circle is a type of line.
•The distance between any points and the centre is called the
radius.
•Diameter of a circle is any straight line that passes through
the center of the circle and whose endpoints lie on the circle.

10. π = 22/7 or 3.142 r = is the radius of the circle

11. 1. Calculate the area of the circle when the radius of
the circle is 7cm
2. Calculate the radius when the area of the circle is
113.10cm

12. 1. π x 7² = 153.94cm²
2. πr² = 113.10cm²
r² = 113.10/π
r² = 36
r = √36
r = 6cm

14. Find the area of sector AOB.
Solution:
Area AOB= ½ x 450² x 2π/3 rad.
= 212057.5 m²

16. Find the area of sector
AOB
Solution:
AOB in radian
=(∏/180) x 120
= 2.094 rad.
Area AOB = ½ x 4² x 2.094
= 16.755cm²