Lesson 3: Practice Problems
Problem 1
Diego measured the diameter and circumference of several circular objects and recorded his measurements in the table.
object | diameter (cm) | circumference (cm) |
---|---|---|
half dollar coin | ||
flying disc | ||
jar lid | ||
flower pot |
One of his measurements is inaccurate. Which measurement is it? Explain how you know.
Problem 2
Complete the table. Use one of the approximate values for
object | diameter | circumference |
---|---|---|
hula hoop | ||
circular pond | ||
magnifying glass | ||
car tire |
Problem 3 From Unit 3 Lesson 2

Name a segment that is a radius. How long is it?
Name a segment that is a diameter. How long is it?
Problem 4 From Unit 2 Lesson 10
Consider the equation
. Find four pairs of and values that make the equation true. Plot the points on the coordinate plane. Based on the graph, can this be a proportional relationship? Why or why not?