Page 149 - NUMINO TG_6A

Workbook Transforming It into a Parallelogram

129-B1-1 129-B1-2

Areas of Circles 2. Find the area of each circle. b.
1. Find the area of each circle. Example 8 cm

Example 4 cm

3 in. b. a.
6 yd 2 ft
a.
2 ft

c. d. 5 cm c. d.
10 cm 14 yd 6 ft

Objective Find the area of a circle. Objective Find the area of a circle.
Textbook Reference Activity 1 Textbook Reference Activity 1

129-B2-1 129-B2-2

Relationship between the Radius and Area 2. Write the correct numbers in the blanks.
1. Answer each question. Example

Example Circumference
Radius
6.28 cm
Area of circle
Area: 28.26 cm2
a. Find the radius of the circle. (Circumference) 2 (Radius) 3.14
Area of circle
Area: 314 yd2
b. Find the diameter of the circle. a. b.

Area: 50.24 in.2 Circumference Circumference 25.12 cm
Radius Radius
2 cm
Area of circle Area of circle

c.

Circumference 31.4 cm
Radius

Area of circle

Objective Find the relationship between the Objective Find the relationship between the
radius and area of a circle. circumference, radius, and area of
a circle.
Textbook Reference Activity 1
Textbook Reference Activity 1
132 NUMINO Teacher s Guide