5) Visualizing uncertainty. a) Gerry uses satellite images to determine the length of a streambed to be 14 km +/- 2 km. Rebecca uses a different method to find the distance as 12.5 km +/- 1.5 Ikm. Draw these on the number lines below Could the two measurements be equal? 10 20 10 20 6) A toy maker needs to manufacture a toy piece that is 3.5 cm long with a percent uncertainty of 5%. What is the allowed absolute uncertainty in this toy's production? 7) If a circle is painted with a radius of 20 cm and absolute uncertainty of +/- 2 cm. (or 10%) a) What is the absolute uncertainty of the area? b) What is the percent uncertainty of the area? C