The number 5.00 × 10² has how many significant figures?

A rectangular piece of fabric measures 55.3 cm in length and 25 cm in width. Calculate the area of the fabric, expressing your answer to the correct number of significant figures.

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

Two students, A and B, measure the length of a table. Student A reports the length as $2.350 \pm 0.001$ m, and student B reports it as $2.35 \pm 0.01$ m. Which student's measurement is more precise, and what is the relative uncertainty in the more precise measurement?

How many significant figures are in the number 0.00420?

Which of the following measurement is most precise?

The length, breadth and thickness of a block is measured to be 50 cm, 2.0 cm and 1.00 cm. The percentage error in the measurement of volume is

A student measures the length of a rod as 25.00 cm using a vernier caliper with a least count of 0.01 cm. The student then uses a meter scale with a least count of 0.1 cm to measure the same rod. Which statement is true regarding the significant figures in these measurements?

The relative density of material of a body is found by weighing it first in air and then in water. If the weight in air is $5.00 \pm 0.05$ newton and weight in water is $\left( {4.00 \pm 0.05} \right)\;newton\;.$ Then the relative density along with the maximum permissible percentage error is

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

The density of a substance is measured as $3.42 imes 10^{-2}$ kg/m$^3$. How many significant figures are in this measurement?