(C) Let the original length be $l$ and the original breadth be $b$. The original area is $A = l \times b$.The new length $l' = l + 0.05l = 1.05l$.The

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(C) Let the original length be $l$ and the original breadth be $b$. The original area is $A = l \times b$.The new length $l' = l + 0.05l = 1.05l$.The new breadth $b' = b - 0.04b = 0.96b$.The new area $A' = l' \times b' = (1.05l) \times (0.96b) = 1.008lb$.The change in area is $A' - A = 1.008lb - 1lb = 0.008lb$.The error percent in the area is $\frac{A' - A}{A} \times 100 = \frac{0.008lb}{lb} \times 100 = 0.8 \%$.

Competitive Quantitative Aptitude Mensuration Measurement of Area

Medium

In measuring the sides of a rectangle,one side is taken $5 \%$ in excess,and the other $4 \%$ in deficit. Find the error percent in the area calculated from these measurements. (in $\%$)

A
$2$
B
$1$
C
$0.8$
D
$0.6$

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Mensuration

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Measurement of Area

The area of a rhombus is $150 \, cm^2$. The length of one of its diagonals is $10 \, cm$. The length of the other diagonal is ....... $cm$.

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If the measures of a diagonal and the area of a rectangle are $25\, cm$ and $168\, cm^2$ respectively,what is the length of the rectangle? (in $cm$)

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The length of a rectangular plot is $60\%$ more than its breadth. If the difference between the length and the breadth of that rectangle is $24\, cm$,what is the area of that rectangle? (in $cm^2$)

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In measuring the sides of a rectangle,one side is taken $5 \%$ in excess,and the other $4 \%$ in deficit. Find the error percent in the area calculated from these measurements. (in $\%$)

Similar Questions

The area of a rhombus is $150 \, cm^2$. The length of one of its diagonals is $10 \, cm$. The length of the other diagonal is ....... $cm$.

The diameter of a circle circumscribing a square is $10 \, cm$. Its sides will be

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