A meter is measured as 9.20m, if the real length is 9.43m calculate the percentage error to 3significant figure ?

To calculate the percentage error, we need to find the difference between the measured length and the real length, and then divide that difference by the real length. Finally, we multiply the result by 100 to get the percentage.

Difference = 9.43m - 9.20m = 0.23m

Percentage error = (0.23m / 9.43m) * 100

Percentage error = 2.44%

Rounded to 3 significant figures, the percentage error is 2.44%.