1. Use the information in the table to make a circle graph. COURSE 2 LESSON 7-9 No. of People in Household Number (in thousands) 1 2 3 4 5 or more 26,724 34,666 17,152 15,309 10,854 Step 1 Add to find the total number of households. 26,724 + 34,666 + 17,152 + 15,309 + 10,854 + 104,705 (in thousands) Size of U.S. Households (2000) Circle Graphs 7-9

2. (continued) COURSE 2 LESSON 7-9 Step 3 Draw a circle. Draw the central angles using the degrees found in Step 2. Label each section. Add a title. Add a key if necessary. Step 2 For each central angle, set up a proportion to find the angle measure. Use a calculator to solve. 15,309 104,705 d 360 10,854 104,705 f 360 26,724 104,705 a 360 = 34,666 104,705 b 360 = 17,152 104,705 c 360 = a 91.9°b 119.2°c 59.0° d 52.6°f 37.3° == Circle Graphs 7-9

3. COURSE 2 LESSON 7-9 The circle graph shows how a class of 48 students spends free time after lunch. 1.What percent study or do extracurricular activities? 2. How many students spend time on extracurricular activities? 3.Find the measure of the central angle that you would draw to represent 15% in a circle graph. 39% 12 54º Circle Graphs 7-9