Step-by-step explanation:
We are given the length 30cm and we are required to calculate what fraction of a meter is 30cm.
To do this, we shall begin by taking note that 1 meter equals 100 centimeters.
That is;

To know what fraction of a meter is 30 centimeters, we shall express 30 cm as a fraction of 1 meter, that is 100 centimeters. This is shown below;


Therefore;
ANSWER:
30 centimeters is

of 1 meter.