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A cone is formed from a circle of radius 10 cm with a 90° sector removed. Find the Volume of the cone |
Answer» <html><body><p><strong>Answer:</strong></p><p>When a sector of radius R=<a href="https://interviewquestions.tuteehub.com/tag/21-293276" style="font-weight:bold;" target="_blank" title="Click to know more about 21">21</a> cm & aperture angle θ=90∘=π/<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a> is folded to form curved surface of a right circular <a href="https://interviewquestions.tuteehub.com/tag/cone-928925" style="font-weight:bold;" target="_blank" title="Click to know more about CONE">CONE</a> then the area of curved surface of cone becomes equal to the area of sector</p><p></p><p>hence, the total surface area of cone including inside & <a href="https://interviewquestions.tuteehub.com/tag/outside-1143075" style="font-weight:bold;" target="_blank" title="Click to know more about OUTSIDE">OUTSIDE</a> curved surfaces formed by sector</p><p></p><p>=2(12θR2)</p><p></p><p>=2(12π2(21)2)</p><p></p><p>=12π(441)</p><p></p><p>=12×227×441</p><p></p><p>=693 cm2</p><p></p><p>Step-by-step explanation:</p><p></p><p>Hope it helps you</p><p><strong>Step-by-step explanation:</strong></p><p></p></body></html> | |