The measurement $4.00 imes 10^3$ m has how many significant figures?

The radius of a wire is 0.24 mm. Then its area of cross section by taking significant figures into consideration is

The number 5.00 × 10² has how many significant figures?

How many significant figures are in the number 0.00420?

The length of a cube is $2.1 imes {10^{ - 2}}m$. the volume in significant figures will be

The sides of a rectangle are 6.01 m and 12m. taking the significant figures into account, the area of the rectangle is

The number of significant figures in all the given numbers 25.12, 2009, 4.156 and $1.217 imes {10^{ - 4}}$ is

A student performs an experiment to determine the density of a rectangular block. They measure the length as $12.12 ext{ cm}$, the width as $5.3 ext{ cm}$, and the height as $1.21 ext{ cm}$. The mass is measured as $50.2 ext{ g}$. The student calculates the volume and then the density. Which of the following correctly expresses the final calculated density with the appropriate number of significant figures?

Round off 0.04567 to three significant figures.

The number of significant figures in all the given numbers 25.12, 2009, 4.156 and $1.217 imes {10^{ - 4}}$ is

The density of a substance is measured as $1.234 imes 10^2$ kg/m$^3$ using instruments with precisions of 2% and 5% for mass and volume respectively. What is the correct representation of the density including error?