1. What are the radii of the circle shown with O as the center?
A. table with 1 row and 4 columns , row1 column 1 , j c comma bar , column 2 q o comma bar , column 3 and , column 4 q j bar , end table
B. table with 1 row and 4 columns , row1 column 1 , j o comma bar , column 2 q o comma bar , column 3 and , column 4 c o bar , end table
C. table with 1 row and 4 columns , row1 column 1 , j o comma bar , column 2 q c comma bar , column 3 and , column 4 c j bar , end table
D. table with 1 row and 4 columns , row1 column 1 , j q comma bar , column 2 q c comma bar , column 3 and , column 4 c j bar , end table
2. Which is the diameter of the circle shown?
A. g o bar
B. q g bar
C. j o bar
D. j g bar
3. Find the length of the diameter of the circle.
4. Think About the Process
a. How do you find the radius of a circle when given the diameter?
A. To find the radius, you need to add 2 to the diameter.
B. To find the radius, you need to divide the diameter by 2.
C. To find the radius, you need to subtract 2 from the diameter.
D. To find the radius, you need to multiply the diameter by 2.
b. Find the radius of a circle with a 8 cm diameter.
5. Find the length of the radius of the circle shown.
6. Think About the Process The radius of a pumpkin is 24 cm. The expression 5x + 38 represents the diameter.
a. What must you do before you can write an equation to solve for x?
A. Subtract 2 from the radius to find the diameter.
B. Divide the radius by 2 to find the diameter.
C. Multiply the radius by 2 to find the diameter.
D. Add 2 to the radius to find the diameter.
b. Write an equation to solve for x. Choose the correct answer below.
A. 5x + 38 = 22
B. 5x + 38 = 12
C. 5x + 38 = 26
D. 5x + 38 = 48
c. Find the value of x.
7.
a. Writing Find the diameter of the circle.
b. Describe the relationships among the center, radius, and diameter of a circle.