Answer: 152.1
21,600 using only four significant figures is still 21,600.
There are 3 significant figures
Significant figures are calculated using various rules.ÊAll non-zero numbers are significant and all zeros that are to the right of the decimal point as well as at the end of a number are significant.ÊTherefore, 1.050L has 4 significant figures.
The greater the number of significant figures, the greater the precision. Each significant figure increases the precision by a factor of ten. For example pi = 3.14 is accurate to 3 significant figures, while pi = 3.14159 with 6 significant figures is a more accurate representation.
Do the calculations, then round to one decimal digit, since the least precise of the numbers involved has one decimal digit.
The number 3400 has two significant figures. The rules for significant figures can be found by using the link to our friends at Wikipedia.
145.992 using only four significant figures is 146.0
61.37795276 in four significant figures is 61.38
21,600 using only four significant figures is still 21,600.
840 using four significant figures is 840.0
You make you're calculations using has many (or more) significant figures as requested without any further considerations until you get to the final result... You reduce the final results significant figures to the requested one or add zeros at the end to match it if it is an exact result
There are 3 significant figures
Using the rules for significant figures, what do you get when you add 24.545 and 307.3?
2 significant figures.
86.346 +54.43 9.5 _______ 150.276 Now after we round the number and write it in significant figures , so it should look like this; 150 why? because when we need to round a number using the significant figures , we must look for the smallest significant figures which is 9.5 .
63.7
Because otherwise you are using figures which imply an accuracy that cannot be justified.