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Question
The cross sectional area of the brick wall of 10 cm thickness of the drain specified.
 
,d b±V dh nhokj ds dkV [k.M dk {ks=kiQy 10 cm gS fudkl ukyh dh eksVkbZ n'kkZ;h xbZ gSA
       
A.
2.1 sq. m
B.
2.5 sq. m
C.
2.7 sq. m
D.
0.031 sq. m
Answer ( Option D)

0.031 sq. m

Solution

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