Quantitative Aptitude Ques 2425
Question: A copper wire is bent in the form of square with an area of $ 121cm^{2}. $ If the same wire is bent in the form of a circle, then the radius (in cm) of the circle is $ ( take,\pi =\frac{22}{7} ) $
Options:
A) 7
B) 10
C) 11
D) 14
Show Answer
Answer:
Correct Answer: A
Solution:
- Side of square $ =\sqrt{121}=11cm $
$ \therefore $ Length of wire $ =4\times 11=44cm $
$ \therefore $ $ 2\pi r=44 $
$ \Rightarrow $ $ 2\times \frac{22}{7}\times r=44 $
$ \Rightarrow $ $ r=\frac{44\times 7}{2\times 22}=7,cm $
BETA
