Find the area of a rectangle with dimensions | vedclass

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Question

(A) The area of a rectangle is given by the product of its length and width: $Area = 1.23 \ cm 	imes 2.345 \ cm = 2.88435 \ cm^2$.According to the ru

Vedclass · Accepted Answer

$2.88$

Vedclass · Answer

(A) The area of a rectangle is given by the product of its length and width: $Area = 1.23 \ cm 	imes 2.345 \ cm = 2.88435 \ cm^2$.According to the rules of significant figures in multiplication,the final result should have the same number of significant figures as the measurement with the least number of significant figures.The value $1.23$ has $3$ significant figures,and $2.345$ has $4$ significant figures.Therefore,the result must be rounded to $3$ significant figures.Rounding $2.88435$ to $3$ significant figures gives $2.88 \ cm^2$.

$A$. $74.083$	$I$. $3$
$B$. $0.029$	$II$. $4$
$C$. $0.002407$	$III$. $2$
$D$. $2.74 \times 10^7$	$IV$. $5$

Find the area of a rectangle with dimensions $1.23 \ cm$ and $2.345 \ cm$ in $cm^2$.

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