Lesson 9: Practice Problems
Problem 1
A circle with a 12 inch diameter is folded in half and then folded in half again. What is the area of the resulting shape?
Problem 2
Find the area of the shaded region. Express your answer in terms of
Problem 3 From Unit 3 Lesson 8
The face of a clock has a circumference of 63 in. What is the area of the face of the clock?
Problem 4 From Unit 3 Lesson 7
Are these pairs of quantities proportional to each other? For the quantities that are proportional, what is the constant of proportionality?
Radius and diameter of a circle
Radius and circumference of a circle
Radius and area of a circle
Diameter and circumference of a circle
Diameter and area of a circle
Problem 5 From Unit 3 Lesson 6
Find the area of this shape in two different ways.
Problem 6 From Unit 2 Lesson 5
Elena and Jada both read at a constant rate, but Elena reads more slowly. For every 4 pages that Elena can read, Jada can read 5.
Complete the table.
pages read
by Elenapages read
by JadaHere is an equation for the table:
. What does the 1.25 mean? Write an equation for this relationship that starts