Unit 7: Filling and Wrapping
Name ____________________________________
Hwk #7: Going Around in Circles (Inv. 3.1)
For exercises 1-4, identify the part of the circle that is light gray. Your choices are circumference, diameter
or radius. Then measure that part in centimeters.
1. part _________________________ measurement _________________
2. part _________________________ measurement _________________
3. part _________________________ measurement _________________
4. part _________________________ measurement _________________
Filling and Wrapping
Homework #7
5.
Estimate the missing information on the chart below.
Circle
Diameter
A
10 cm
B
14 cm
Circumference
C
21cm
D
15cm
Using the circle to the right. Draw and label three different diameters.
6. What is the measure (in centimeters) of each diameter?
a. Diameter #1’s measure _____________________
b. Diameter #2’s measure _____________________
c. Diameter #3’s measure _____________________
7. What can you say about the measurements you found?
Now draw and label three different radii (RAY dee eye, the plural for radius) on the circle below.
8. What is the measure in centimeters of each radius you drew.
a. Radius #1’s measure _____________________
b. Radius #2’s measure _____________________
c. Radius #3’s measure _____________________
9. What can you say about the measurements you found?
Filling and Wrapping
Homework #7