Circle Graphs Use the circle graph below. COURSE 2 LESSON 7-9 Circle Graphs Use the circle graph below. a. What percent of the days were snowy? 13% b. How many days were cloudy? 27% of 30 days = 0.27 • 30 = 8.1 8 days were cloudy. 7-9

Circle Graphs Use the information in the table to make a circle graph. COURSE 2 LESSON 7-9 Circle Graphs Use the information in the table to make a circle graph. Size of U.S. Households (2000) 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) 7-9

Circle Graphs (continued) COURSE 2 LESSON 7-9 Circle Graphs (continued) 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 f 26,724 a = 34,666 b 17,152 c a 91.9° b 119.2° c 59.0° d 52.6° f 37.3° 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. 7-9

COURSE 2 LESSON 7-9 Circle Graphs 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 7-9