The answer depends on the units used for the tape measure.
Half of 21.25 is 10.625 - whether on a tape measure or a calculator or anywhere else.
If you have tape that is 1.4 cm longs and the length of 29.4 would equal to 21 cm. This is a simple math problem.
Centimetres or cm are used to measure distance
Use a tape measure!
compare it with cm .....mm x 10 cm
A ruler or tape measure.
try a tape measure mate most have inches and cm cya
2 inches = 5.08 cm
6.299 cm
My common 30m builders steel tape is graduated in cm and m.
A Rocket can be 400ft tall!
A tape measure has a feet, inches and CM measurement.
A tape measure to measure the height (h cm), depth (d cm) and width (w cm). Then capacity = h*d*w cm3 = h*d*w/1000 litres.
You would use a ruler or a measuring tape to measure a 10 cm length of dialysis tubing. Make sure to lay the tubing flat on a surface and use the ruler to measure accurately from one end to the other.
To measure in millimeters (mm), use a ruler or measuring tape with markings in millimeters. To measure in centimeters (cm), use a ruler or measuring tape with centimeter markings. For meters (m), use a meter stick or measuring tape with markings in meters. Simply align the start point of the object you are measuring with the zero mark on the ruler or tape and read the measurement at the endpoint.
You need a ruler, tape measure or something else preferably graded in inches, then you put this against what it is that you want to measure and see what you get. If your measuring device is graded in cm remember that 1 inch is 2,54 cm