Jimin was calculating the area of a square. He made a mistake in measuring the side of square, the error of 10% excess is made in calculating the side of a square by him. Find the % error in its area.
(A)
11
(B)
15
(C)
21
(D)
60
Answer: (C)
Explanation:
Area of square = L2
=(1.1L)2 = 1.21 L2
=21 %
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