Read the length of the pencil to the correct number of significant figures.

• A. 8.0 cm
• B. 8.000 cm
• C. 9 cm
• D. 9.0 cm
• E. 9.00 cm

Answer: (E)

Verified step by step guidance

1. Observe the image of the pencil placed against the ruler. The pencil's tip aligns with a specific mark on the ruler.
2. Identify the mark on the ruler where the pencil's tip ends. In this case, it is between the 9 cm and 10 cm marks.
3. Determine the smallest division on the ruler. The ruler is marked in millimeters, with each centimeter divided into 10 equal parts, indicating each small division is 1 mm or 0.1 cm.
4. Estimate the position of the pencil's tip relative to the nearest millimeter mark. The tip appears to be exactly on the 9 cm mark, with no additional millimeters.
5. Express the length of the pencil with the correct number of significant figures. Since the pencil's length is exactly on the 9 cm mark, and the smallest division is 0.1 cm, the length should be recorded as 9.00 cm to reflect the precision of the measurement.