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Find the central angle of sector by which a cone of base radius 20cm and sland height25 cm |
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Answer» Step-by-step explanation: ant height and the RADIUS of the BASE of a right CIRCULAR phone are 'H' and 'R'respectively then the RATIO of the AREAS of the lateral surface and the base is 1) 2H:r 2) H:r 3) H:2r.D.H^2:r^2 |
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