Choose the correct answers to the questions from the given options. A right angle triangle shaped piece of hard board is rotated completely about its hypotenuse, as shown in the diagram. The solid so formed is always: i. a single cone ii. a double cone Which of the statement is valid?
Explanation
When the right angle triangle is rotated about its hypotenuse, it forms two cones, one with the smaller angle and one with the larger angle. Therefore, the solid formed is a double cone.
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