Significant Figures

The number of significant figures for the three number $161\mathrm{cm}, 0.161\mathrm{cm}, 0.0161\mathrm{cm}$  are:

The side of a cube is measured by vernier callipers ($10$ divisions of a vernier scale coincide with $9$ divisions of main scale, where $1$ division of main scale is $1 \mathrm{mm}$ ). The main scale reads $10 \mathrm{mm}$ and first division of vernier scale coincides with the main scale. Mass of the cube is $2.736 \mathrm{g}$. Find the density of the cube in appropriate significant figures.

The side of a cube is measured by vernier calipers ($10$ divisions of a vernier scale coincide with $9$ divisions of main scale, where $1$ division of main scale is $1 \mathrm{mm}$). The main scale reads $10 \mathrm{mm}$ and first division of vernier scale coincides with the main scale. Mass of the cube is $2.736 g$. Find the density of the cube in appropriate significant figures.

The answer of $(1.0236-0.97268)$ with due regards to significant figure is

What are the rules for calculation of significant figures in subtraction and addition.

Round the numbers in the table to the given accuracy

Round the numbers in the table to the given accuracy

Round the numbers in the table to the given accuracy

Round the numbers in the table to the given accuracy

Estimate the volume of a cube with side $4.82 \text{cm}$. Write down your answer correct to $2$ significant figures.

The area of a circle is $20 {\text{cm}}^2$. Calculate the radius of the circle correct to $2$ significant figures. $\left(\text{use }\mathrm{\pi }=3.14\right)$

A circle has radius $33 \text{cm}$. Calculate the circumference of the circle to $3$ significant figures. $\left(\text{use }\mathrm{\pi }=3.14\right)$

Round $1351.36 \text{JPY}$ to the nearest $100 \text{JPY}$.

Round $12 \text{BGN}$ to the nearest $10 \text{BGN}$.

Round $1002.50 \text{USD}$ to the nearest thousand $\text{USD}$.

Round $502.13 \text{EUR}$ to the nearest $\text{EUR}$.

Round the number $\sqrt{62}$ to $1$ decimal places.

Round the number $0.00637$ to $2$ significant figures.

Round the number $27318$ to $1$ significant figure.