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27 Oct 2021

Given information

Given:

 

Step-by-step explanation

Step 1.

Conceptual plan:

Significant figures rules for the multiplication and division :

"The significant figure in the result must be equal to the significant figure of least precise measurement. "

 

Rounding off rules:

If the digit to be dropped is    or less, then the preceding number remains unchanged.

On calculating :

 

has three significant figures, has three significant figures and has three significant figures.

The least significant figure that will be used for answer is three.

The last digit to be dropped is  , which is less than  .

Hence the number can be rounded off to three significant figures as .

 

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