What will be the Circumference of Circle? If

The difference between the circumference and radius of a circle is 37 cm., then the circumference of that  circle is:

  1. 7 cm
  2.  44 cm
  3.  154 cm
  4.  None of these
Desire Adnan Default Asked on 4th August 2015 in Maths.
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1 Answer(s)

Answer: (1) 7 cm
Explanation:-
The difference between the circumference and radius of a circle  =  37 cm
Formula-
The circumference of a circle = 2 x pai x r
Where, r = radius of a circle.

Then, 2 x pai x r – r = 37
r ( 2 x 22/7 – 1) = 37
r (44 – 7 )/7 = 37
37 r = 37 x 7
r = 7

Then, the radius of the circle is  7 cm
Hence, the answer is (1)  7 cm.

Anurag Mishra Professor Answered on 5th August 2015.
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