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Part AExpress your answer to one significant figureAEdpgSubmitBeqleit Alswer...

Question

Part AExpress your answer to one significant figureAEdpgSubmitBeqleit Alswer

Part A Express your answer to one significant figure AEd pg Submit Beqleit Alswer



Answers

Express your answers to problems in this section to the correct number of significant figures and proper units. What is the area of a circle $3.102 \mathrm{cm}$ in diameter?

Hi, everyone. So, in discussion, they ask, that is complete the following travel. Okay, uh, they have given one illustration. There is number 1.45815 around it. 1.458 as a four significant figures, the same number is rounded to two significant figure as a 1.5 and same number. It is rounded to one significant figure as a one. So second number that is 8.3 to 4. Double six. It can be rounded to four significant figure as eight point 3 to 5, similarly rounded to two significant figure as 8.3, then rounded to one significant figure as a the next. Now 84.572 to 5, it can be rounded to four significant figure as 84.57 then 22 significant figure as 85 1 significant figure at 18 to $10 to one. Then 1 32 point W 51 show. It can be rounded as 1 32 0.6, then 22 significant figure as 1.3 into 10 days to two, then tools. One significant figure as one into tender student. Thanks

Rules for landing of numbers are if the number to be rounded off is greater than five. The number will be rounded up For example. Rounding of number 38 at the The number is followed by Deceit eight Which is better and greater than five does. The number will be refunded or that surrounded up with any other stand that is 40. If the number to be if the number to be rounded off is followed by dessert zero or less than five, the number will be rounded down. For example. Rounding of # 30 T. The number is followed by deceit three which is Less than five does. The number will be rounded down to the knee, understand that is 30 Is the number to be rounded off is followed by Disease five then the number is rounded off so that the last visit is an even number. For example, rounding of both the numbers 23.5 and 24 points five billion 24. Is this Even though Yeah, A number is significant if it is a non-0. What is it next to any zeros between two or more non zero disease. Start trailing zeroes in a decimal number. Also note that Jiro placed after a non geo disease without any decimal is simply placed. Hold a placeholder and insignificant. Therefore, yeah, 7.48 fight right. It has five significant figures. 200 Off three Significant figures. The last two disease that is 55 should be discarded As 55 is greater than 50. So one is added to the proceeding visit which is eight hands around it off Dizzy. So $100 figure is 7.49 B. Yes To 98.69 she sent emitted. It has six significant figures to round off to fight significant figures. The last disease that is see Is more uh should be discarded. S three is more than five. So it is the place by zero hands. Around. The round of figure is To 98.69. Yeah, sees 11.698 every. Mhm. Mhm. It has five significant figures to round off one significant figure. The last visits that are 169 and eight should be discarded first round rounding off two significant figures. S six is Greater than five. So the number will be rounded up. The the number becomes do it in order to round off one significant figure as two is more than five. So It is the place by zero hands. The rounding of figures. Yeah. Yeah. These We're .05. Ah It is four significant figures to rounding to round off to three significant figures. The last deceit of this is right. So we discarded. As sorry as the disease which is needed to be discarded, is equal to fight. So the number will be will be the number sounds of. So the so that last disease is an even number. Hence the rounding of figure is around. Of figure is 12.0.

Okay now 55 drought. The number on the left of the number of significant Vickers included by the exam on the first row. And then you see so 55 what do we have to do? We have row do on do for significant Vickers secon routed to 32 Specific and question Nice. Routed to one. Significant right. And here we have one boy by 81 by one boy for a 45 a 15 And for 6 ft you have toe up Mitt were to stop, like one for 58 and one less than five. So we have only one for 58 one boy for 58 And now to a sick sick. So we have way. We have fight. They fight Fike. And because the the number will be to remove its fi. So we have one boy. If I the receiver number have to leave my wife and not only one so the only one here we call for lesson fi ness 8.3 to 9. 60 a boy 3296 And we keep play for suffix. So we have preceded us The 6 ft with the number want to be removed. There's a six Secret and Fi. So the rivers number there's receded. Number must increase by one. Therefore, we got the result. That is for this. Well, this far, not NY. So when re buys one or a 32 fly right now does official got able three and once. If it this eight. And that's 84. 57225 84 57225 And now we have 84. Boy by seven. Not a specific 85 Assemble. So eight, we could get 84 a lesson than 10 high. We can now got only eight. 85. So you amid age, you get eight tie. 10 By what? About one. And now next. 13355121335512 So we have only for six. Quick. 133 Boy sick. Okay. And now what does it fit? You have those yet? Those are from here. Suffer me so that what they do. I know it doesn't look nice. You don't know this. So you admit three year. And for this okay,

All right, So we have a number of values here. We've got 67.0, uh, 29 grams. We have 0.15 leaders. We have five point. I'm sorry. 52 0.8 005 milligrams. And we have 3.17 for 97 more and we're going Teoh, uh, express these in in terms of some specified number of significant figures. So for this 1st 1 we need to express this 236 figs. Pardon? My bad handwriting. So And to express this in terms of three significant figures we have to take take a look at the last the last digit here, which is nine sweet around that 2 to 3. However, that isn't enough to cause us to around that zero up. So we just truncate the number there, and we're left with 67.0. That last zero is significant because it's not a place holder value. Rather, it expresses that your measurement is accurate to, um, that level precision. Here we have 0.15 leaders and we want to round that too. Um, one significant figure. Uh, we usually draw the line for rounding up or down at five. So we would round this up to which means that we're left with. So yeah, one thing big, which means that we would be left with zero point to leaders. And this is one significant failure because zero before the decimal place doesn't count if there's nothing ahead of it. So there's nothing Here s O that basically counts as as a insignificant figure. You could also you can also write this in one safety in scientific notation. It would just be too Times 10 to the minus one leaders. So now we have this mass 52.8005 milligrams and we want to express this to five sig Figs. So that one too 345 We'll have to round this up 21 So we'll have 52 points. Hey, 01 This zero is significant because it's sandwiched by this eight and by this one. So that's our answer there. And then now we have 3.17497 moles. We want to round this to three sick Biggs. So we'll have to truncated about here. So we'll round this upto a five, which means we have to round this up to eight, which means that we're left with 3.18 more as our answer in 366 that's that.


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