Answer:
I think the answer is c because the arrow has to pointing positive.
Answer:
Option (2)
Step-by-step explanation:
From the picture attached,
When the given shape is rotated about the axis 'a',
Triangle ABC forms a 3-D figure of a cone.
Segment AB is the diameter of the circular base and CD is the height of the cone.
Therefore, Option (2) CONE will be the answer.
Answer:

Step-by-step explanation:
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I’m tired I’ve so much homework to complete and a long day of school :(