(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Calculate each of the following to the required level of accuracy given that each number, other than those indicated in brackets, has been obtained by measurement.

a) (3.142*1.95)/6*(3*5.44^2+1.95^2)

(power 2, divisor 6, multiplier 3)

b) (3.142*1.234)/12*( 0.424^2+0.424*0.951+0.951^2)

(power 2 and divisor 12)

2. Relevant equations

3. The attempt at a solution

a)My calculator gives me 94.5414368

So I think 94.5 should be the answer since 1.95 has the least number of significant figures- three. My book, though, says it is 94.54

b) The calculator gives 0.4805827337

So my answer is 0.480 because 0.424 and 0.951 each have only 3 sig figs- least number of sig figures. But my book says the answer is 0.4806

Please, show me where I am wrong.

Thanks.

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# Rounding to required level of accuracy

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