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The diameter of a circle found by measurement 5.2cms with a maximum error 0.05cms. The maximum error in its area is

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0.5 sq.cms

0.041 sq.cms

4.1 sq cms

0.41 sq.cms

answer is C.

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Detailed Solution

$A = π r^{2}; Δ c = 2 π r Δ r$

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