During a lab activity Dash and Bob measured a wooden block to be 3.10cm in length, 0.50cm in width and 2cm in height. What is the volume of this block with the correct number of significant figures?

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beateach | Elementary School Teacher | (Level 1) Educator

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In order to find the volume of the wooden block, Dash and Bob would use the formula:

Length x Width x Height = Volume of a Rectangular Prism (in cubic units)

3.10 cm x 0.50 cm x 2.0 cm = 3.1 cubic centimeters

The volume of the wooden block is 3.1 cubic centimeters

Rules for finding the number of significant figure include:

  • The leftmost digit which is not a zero is the most significant number.
  • If the number does not have a decimal point, the rightmost digit that is not a zero is the least most significant number.
  • If the number does have a decimal point, the rightmost digit is the least significant, even if it is a zero.
  • Every digit between the least and most significant digits should be counted as a significant digits.

The number of significant digits in a product (multiplication) or quotient (division) is the same number of significant digits as in the number with the lowest number of significant figures.

Sources:

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