the ruler is straight and the string is not so it makes it harder for you to measure the string
The answer depends on the graduations marked on the ruler.
If you have a ruler and a piece of string, you could use the string to find the distance around the bust (or whatever you wanted to measure), mark the point at where the string starts to overlap, then measure the string using the ruler.
Do what I do with my snakes - use a piece of string to get the approximate length from nose to tail - then lay the string on a ruler to get the measurement.
take a peice of string and see how long the amount is then measure the amount of string on to a ruler and that's your volume :)
When you estimate you guess the size of something, but when it is precise you have to actually measure it, e.g with a ruler.
Yes, the ruler does need to be straight when finding or measuring the length of a country on a map. If the distance curved, you can use a string and the ruler to measure the length.
A ruler or a metric tape measure is commonly used to measure length in the metric system. These instruments typically have units of centimeters or millimeters for more precise measurements.
To measure the depth of a beaker, you can use a ruler or a graduated cylinder. Simply place the beaker on a flat surface and use the ruler or graduated cylinder to measure the distance from the opening of the beaker to the bottom. This will give you the depth of the beaker.
With a unit of measurements and an object to see it. (I.e string, your eyes) Optional a ruler
Use a string: put your finger where the string is at the edge of the object, then use a ruler to measure the tip of the string to your finger. Or use a protractor: each degree equals 1/16 of an inch.
Use the scale given in the map. Measure the distance by tracing the road with a string. Then measure the string. eg.10 cm. This is the working to get the distance: scale given = 2 cm distance n cm. = 10 cm = 10/2 = 5 ans=The distance on actual ground is 5 km.
a plastic ruler or some string that can be measured once off the pizza