ruler, caliper, tape measure. In today's high tech world, there are also laser/sonar devices too. The laser beam is pointed to a hard surface and then the sonar sends and receives a signal - based upon the time interval, the exact distance is computed.
a ruler or a tape measure
A ruler is an example of an instrument that can be used to measure relatively small linear distances, though it could not measure all three at once.
For a rectangle, length X width = area. Measure the length in cm. Measure the width in cm. Multiply the length X the width to get the area in cm2.
length times width length times width
If you have a ruler then you could measure the length width and height and then multiply them together. (LWH is the formula)
I mile is a measure of length (5280'). It does not have width.
You measure the height, width, and length.
You measure the linear inches with a ruler or tape measure, then you do the calculation to find out the area (length times width, if it is a rectangular shape).
length plus width equals perimetre
no. it is to measure the length. meters is length-wise.
You measure it.
measure it