The circumference of a circle, whose area is 24.64 m2 , is :
A. 14.64 m
B. 16.36 m
C. 17.60 m
D. 18.40 m
Answer: Option C
Solution(By Examveda Team)
$$\eqalign{ & \because \pi {R^2} = 24.64 \cr & \Leftrightarrow {R^2} = \left( {\frac{{24.64}}{{22}} \times 7} \right) \cr & \Leftrightarrow {R^2} = 7.84 \cr & \Leftrightarrow R = \sqrt {7.84} \cr & \Leftrightarrow R = 2.8\,m \cr & \therefore {\text{Circumference :}} \cr & = \left( {2 \times \frac{{22}}{7} \times 2.8} \right)m \cr & = 17.60\,m \cr} $$Related Questions on Area
A. 15360 m2
B. 153600 m2
C. 30720 m2
D. 307200 m2
E. None of these
A. 2%
B. 2.02%
C. 4%
D. 4.04%
E. None of these
A. 16 cm
B. 18 cm
C. 24 cm
D. Data inadequate
E. None of these
The percentage increase in the area of a rectangle, if each of its sides is increased by 20% is:
A. 40%
B. 42%
C. 44%
D. 46%
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