1. Problem Solving The Area of a Circle

2. Review

4. Crop Circles Manuel and Matthias decide to create a crop circle design in their father’s farm field. ▫The biggest circle has a diameter of 16m. ▫The smallest circle has a diameter one fourth the size of the biggest ▫How much greater is the area of the biggest circle?

5. The Sprinkler A water sprinkler can spray water at a maximum distance of 12 m in all directions. What area of the garden can this sprinkler irrigate? round your answer to the nearest square meter.

6. The Garden A circular garden with a radius of 10 meters is surrounded by a walkway of width 1 meter. Find the area of the walkway (shaded part).

7. The Pizza A circular pizza costs $19.99. What is the cost of 1 square centimetre if the diameter of the pizza is 36 cm?

8. The Intermission Challenge Boston College is hosting an intermission challenge. A person shoots a puck from center ice and if it goes through the hole, he or she wins a million dollars. If the area of the puck is 18 cm squared, how big will they need to make the hole?