Problem 40d

Given information

Given:

Number =  

Find:

Significant figures =?

Step-by-step explanation

Significant figure rules:  

• All non-zero digits are significant.
• Interior zeros (present between the nonzero digits) are significant.
• Leading zeros (present at the beginning of a number) are not significant.
• Trailing zeros (present at the end of a number) are not significant.
• Trailing zeros present after the decimal are significant.

The given number m has five non-zero digits and two trailing zeros after the decimal that are significant. The decimal multiplier is not significant.

Thus the given number  has seven significant figures.