Bendy's answer to Nigel's Secondary 4 E Maths Singapore question.
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Apologies that I am unable to provide a written solution. Hope this helps. Will be able to provide a written one if you still need it later. Just comment here
Date Posted:
4 years ago
How to find the curve face of cone?
The curved face of the cone, is actually the radius of the circle. Because you are curling the major circle section into a cone.
Try using a post it or a small piece of paper to tear into the shape and you will be able to visualize better
See this gif for better illustration
https://images.app.goo.gl/4qJwdox9RhTTXYo38
Or
https://blender.stackexchange.com/questions/64204/how-to-deform-a-2d-shape-to-make-a-3d-object
(first reply from the question)
Try using a post it or a small piece of paper to tear into the shape and you will be able to visualize better
See this gif for better illustration
https://images.app.goo.gl/4qJwdox9RhTTXYo38
Or
https://blender.stackexchange.com/questions/64204/how-to-deform-a-2d-shape-to-make-a-3d-object
(first reply from the question)
So it is just the original radii of 5cm? Then I use Pythagoras Thereom of square root 5^2 + 4.444^2 to find h, right?
I will upload a written version. See the other solution instead
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