37 Ram has a semicircular disc. He rotates it about its diameter by 360 degrees. When he rotates the disc, a volume of air in his room gets swept. What is the name of the object/shape that exactly occupies this volume? A. Cylinder B. Hemisphere C. Sphere D. Cuboid
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Step-by-step explanation:
options a is right dear
We rotate the semicircle about AB by 360 degrees. It is clear that by seeing the 2nd diagram that the shape obtained is a sphere. If it was rotated by 180 degrees instead of 360 degrees, we get a hemisphere. The line segment AB will become the diameter of the sphere formed.
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