Answer:
Explanation:
To change the number 40.505734 to two significant figures, we need to round it to the nearest value with two significant figures.
Looking at the third digit after the decimal point (5), we see that it is greater than or equal to 5. Therefore, we need to round up the second digit after the decimal point (0) by adding 1 to it.
Thus, the number 40.505734 rounded to two significant figures is 41.