The number 18.34 has four significant figures

True

Step-by-step explanation:

The number 18.34 has four significant figures. Yes it is true that it has four significant figures.

For significant figures, we start counting from the first non zero digit.

The first non zero digit in 18.34 is 1.

Count from this number to the last number, we have four numbers.

Therefore, it is true that the number 18.34 has four significant figures.