SSC CHSL 15 Nov 2015 Shift 1 Paper

Question : 141 of 199

Marks: +1, -0

The ratio of circumference and diameter of a circle is 22:7. If the circumference be

1 4/7

m then the radiusof the circle is:

Solution:

Let radius of circle =

r

cm
According to ques, ratio of circumference and diameter :
⇒

{2πr}/{2r }=22/7

⇒

π = 22/7

[It is a void statement]
Also, circumference

2πr = 1 4/7

⇒

2 ×22/7 × r =11/ 7

⇒

44r=11

⇒

r=11/44=1/4

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