Question

perform the calculation. 1.2 cm × 2.0 cm × 7.6 cm write your answer with the correct number of significant figures. round if necessary.

Explanation:

Step1: Multiply the numbers

$1.2\times2.0\times7.6 = 1.2\times15.2=18.24$

Step2: Determine significant - figures

The number 1.2 has 2 significant figures, 2.0 has 2 significant figures, and 7.6 has 2 significant figures. So the result should be rounded to 2 significant figures.
Rounding 18.24 to 2 significant figures gives 18.

Answer:

$18\ cm^{3}$