5131. What is the ratio of the circumstance of a circle to its radius?
دائرے کی حالت کا اس کے رداس کا تناسب کیا ہے؟
- A. None of these
- B. π/2
- C. 2πr
- D. 2π
Check answer and explanation
Answer: 2πr
Explanation The Greek letter π (pronounced as Pie) represents the ratio between the circumference and the diameter of a circle. i.e. c i r c u m f e r e n c e o f t h e c i r c l e I t s d i a m e t e r ( d ) = π = C i r c u m f e r e n c e o f t h e c i r c l e = π × d = 2. π . r ND18-5-2023