Lesson 15 Circle functions
1.Fill in the table, taking the value of Pi as 3. (Or use its value in the calculator and then round to nearest whole number.)
2. Draw the graphs for the circumference and the area on the grid on Worksheet
3. Use letter A for area points and letter C for circumference points. Join the letters.
3. Describe the differences between the two graphs.
4. A circle has an area of about 100.
(a) How do you find it’s radius?
(b) How do you find its circumference?