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What is the area of a sector with radius (15) cm and central angle (144^\circ)?त्रिज्या (15) सेमी और केंद्र कोण (144^\circ) वाले सेक्टर का क्षेत्रफल क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (90\pi) square cm(90\pi) वर्ग सेमी
(144^\circ=\frac{4\pi}{5}) and (A=\frac{1}{2}\times225\times\frac{4\pi}{5}=90\pi). In exams, converting degrees into radians is essential.(144^\circ=\frac{4\pi}{5}) और (A=\frac{1}{2}\times225\times\frac{4\pi}{5}=90\pi)। परीक्षा में डिग्री को रेडियन में बदलना जरूरी है।
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