Question

significant figure of 3000004.3​

Answer 1

$\green{\huge{\underline{\underline{Answer:-}}}}$

Given:

Number is 3000004.3

To find:

Significant figure of 3000004.3

Answer:

⟹ There are 7 significant figure in 3000004.3

⟹ The number of digits after decimal is 1

⟹ So, we will write 3000004.3 in scientific notation as

= 3.0000043 × 10^6

⟹ Always, if we express number in exponential form or scientific notation, it will not affect the number of significant figure

Explanation:

1. All the zeroes between non zero digits are significant
2. Numbers after decimal are also significant
3. Zeroes to left of non zero digit are not significant while zeroes to right are significant with decimal. 1300 has 2 significant figure but in 1300.0 has 5

Knowledge Booster:

⟹ All non zero digits are significant.

Example: 1245 has 4 significant figure

⟹ The trailing zeroes (zeroes to right of last non zero digit) in a number with a decimal point are significant

Example: 01.080 has 4 significant figure

⟹ If number is less than 1, zeroes on the right of the decimal point but to the left of the first non zero digit are not significant.

Example: 0.005401 have 4 significant figure