Page 165 - NUMINO TG_6A

Workbook Fill It with Chocolate Pieces

130-B1-1 130-B1-2

Surface Area of Cylinders (1)

1. Use the net of each cylinder to write the correct numbers in the blanks. 2. Use the net of each cylinder to find the surface area.
Example
Example
3 cm 3 cm

5 cm

10 cm

7 cm

(length of rectangle) cm
2 3.14

a. a. b.
2 in. 4m
4 cm (length of rectangle) 4m
2 3.14 5 in.
cm

4 cm

5 cm

b. 6 cm 6 cm c. 3 yd d. 5 ft
10 cm 7 yd
(length of rectangle) 6 ft
2 3.14
cm

Objective Understand that the length of side Objective Learn how to find the surface area
and the length of the perimeter of by looking at the net of a cylinder.
the base of a cylinder are equal.
Textbook Reference Activity 2
Textbook Reference Activity 1

130-B2-1 130-B2-2

Surface Area of Cylinders (2) 2. Find the surface area of each cylinder.
1. Find the area of the base and side, and then find the surface area.

Example Example

4 cm 8 cm a. 10 yd

10 cm 5 cm 8 yd

a. 3 in. b. 2 ft b. 4 in. c.
12 in. 5 ft 12 in. 6 cm

(area of base) about (in.2) (area of base) about (ft2) 9 cm
(area of side) about (in.2) (area of side) about (ft2)
(surface area) about (in.2) (surface area) about (ft2)

c. 5 m d. 15 yd
10 yd
9m d. e. 10 cm
2 ft 4 cm

(area of base) about (m2) (area of base) about (yd2) 3 ft
(area of side) about (m2) (area of side) about (yd2)
(surface area) about (m2) (surface area) about (yd2)

Objective Learn how to find the surface area Objective Learn how to find the surface area
of a cylinder. of a cylinder.

Textbook Reference Activity 2 Textbook Reference Activity 2

148 NUMINO Teacher s Guide