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Question

If we rotate a right-angled triangle of height 5cm and base 3cm about its base, we get


A

cone of height 3cm and base 3cm

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B

cone of height 5cm and base 5cm

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C

cone of height 5cm and base 3cm

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D

cone of height 3cm and base 5cm

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Solution

The correct option is D

cone of height 3cm and base 5cm


Explanation for correct option

Here is given a right-angled triangle with height 5cmand base 3cm.

Rotate it about its base and it will look like a cone after rotation as shown below.

Base and height of cone will interchange after rotation.

Thus, the Height of a cone will be 3cm and the base of a cone will be 5cm.

Hence, option (D) is the correct answer.


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