SSC Government Jobs Exams Numerical Ability Area and Volume

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:
A. 2% B. 2.02%
C. 4% D. 4.04%

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SSC Other Question

Q. 6:18::4:x
x=?
A. 8
B. 10
C. 16
D. 20 The ratio between the length and the breadth of a rectangular park is 3 : 2. If a man cycling along the boundary of the park at the speed of 12 km/hr completes one round in 8 minutes, then the area of the park (in sq. m) is:

Options
1) 15360
2) 153600
3) 30720
4) 307200