Constructing a Plane Scale of RF=1/100 to Read Meters and Decimeters

To construct the plane scale of RF=1/100 to read meters and decimeters, follow these steps:

1. Determine the length of the scale: The scale should be long enough to measure 10 meters. Therefore, the length of the scale should be 1000 cm (10 meters x 100 cm/meter).

2. Determine the number of divisions: To read the scale accurately, divide it into 100 equal parts since the RF is 1/100.

3. Determine the size of each division: Since the scale needs to read meters and decimeters, each division should represent 1 cm. Therefore, each 10 divisions (10 cm) will represent 1 meter, and each division will represent 1 decimeter.

4. Mark the scale: Use a ruler and a fine-point marker to mark the scale. Begin at 0 at one end of the scale and mark every 1 cm until you reach 1000 cm at the other end.

5. Label the scale: Label the scale at each meter mark (10 cm intervals) with the number of meters (0, 1, 2, 3, ..., 10). Label each decimeter mark (1 cm intervals) with the corresponding number (0, 1, 2, 3, ..., 9).

6. Test the scale: Test the scale by measuring a known distance, such as 1 meter or 5 meters, to ensure accuracy.

Measuring 7.6 Meters on the Scale

To measure a distance of 7.6 meters on the scale, follow these steps:

1. Find the 7-meter mark on the scale: Locate the 7-meter mark on the scale, which should be at the 70 cm mark (7 meters x 10 cm/meter).

2. Estimate the additional distance: Estimate the additional distance of 0.6 meters, which is equivalent to 6 decimeters.

3. Locate the 6-decimeter mark: Locate the 6-decimeter mark on the scale, which should be at the 76 cm mark (70 cm + 6 decimeters x 1 cm/decimeter).

4. Read the total distance: The total distance is 7.6 meters, which is at the 76 cm mark on the scale.

Overall, constructing a plane scale of RF=1/100 to read meters and decimeters and measuring a distance of 7.6 meters on the scale involves accurately dividing the scale into 100 equal parts, marking each division with a fine-point marker, labeling the scale at each meter and decimeter mark, and estimating the additional distance to read the total distance accurately.

10cm