1.

Find the central angle of sector by which a cone of base radius 20cm and sland height25 cm​

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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