An error 2% in excess is made while measuring the side of a square. The percentage of error in the calculated area of the square is:
100 cm is read as 102 cm.
A1 = (100*100)Sq.cm
A2 = (102*102)Sq.cm
(A2 - A1) = 1022-1002 = (102 + 100) x (102 - 100) = 404 sq.cm.
The lengths of the diagonals of a rhombus are 16 cm and 12 cm. Its area is:
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