यदि \(s=25\pi\) सेमी और केंद्र कोण \(225^\circ\) है तो त्रिज्या क्या है?
If \(s=25\pi\) cm and the central angle is \(225^\circ\), what is the radius?
Explanation opens after your attempt
Correct Answer
B. (20) सेमी(20) cm
Concept
\(225^\circ=\frac{5\pi}{4}\) and \(r=\frac{s}{\theta}=\frac{25\pi}{5\pi/4}=20\). Convert the angle to radians first.
Why this answer is correct
The correct answer is B. (20) सेमी / (20) cm. \(225^\circ=\frac{5\pi}{4}\) and \(r=\frac{s}{\theta}=\frac{25\pi}{5\pi/4}=20\). Convert the angle to radians first.
Exam Tip
\(225^\circ=\frac{5\pi}{4}\) और \(r=\frac{s}{\theta}=\frac{25\pi}{5\pi/4}=20\) है। कोण को पहले रेडियन में बदलें।
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