Question

How is s=theta×r if s=theta/360×2πr

Answer 1

Circumference of circle:

Step-by-step explanation:

$\ Given \ value:\\\\\ s= \frac{\theta}{360}\times 2\pi r\\\\\ Find:\\\\prove:\\\\s= \theta \times r\\\\\ Solution:\\\\\ s= \frac{\theta}{360}\times 2\pi r\\\\\therefore \pi = 180 \\\\2\pi = 360\\\\\rightarrow \ s= \frac{\theta}{2\pi}\times 2\pi r\\\\\rightarrow \ s= \theta \times r$

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