Question

A balance accurate to one-hundreth of a gram measures the mass of a rock to be 56.10 grams. How many significant digits are in this value?

Answer 1

Significant figures are any non-zero digits or trapped zeros, they do not include leading zeros or trailing zeros.

The measurement of the mass of rock = 56.10

The first significant number is 5;

The second significant number is 6;

and the third significant number is 1.

Hence, 56.10 have 3 significant digits