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 What is the circumference of a circle of diameter 10 cm?
  • a)
    35 cm
  • b)
    30 cm
  • c)
    31.4 cm
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
What is the circumference of a circle of diameter 10 cm?a)35 cmb)30 cm...
The formula for the circumference of a circle is:
Circumference = π × diameter
Circumference = 3.14 ×10 = 31.4cm
 
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Community Answer
What is the circumference of a circle of diameter 10 cm?a)35 cmb)30 cm...
Diameter  of the circle = 10 cm
Then the radius of the circle =  ( 10  /  2  ) cm 
                                                                  = 5 cm
Circumference of the circle = 2 PI r
{ r = radius }
According to the question , 
( 2 * 22/7 * 5 ) = 31.4 cm
Hence OPTION C is correct .   
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