World%20Rope%20Challenge - PowerPoint PPT Presentation
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World%20Rope%20Challenge
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How much more rope would be needed if it was to be raised exactly 1 metre from ... about the earth just circumference formula. Circumference of ANY circle is C ... – PowerPoint PPT presentation
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Title: World%20Rope%20Challenge
1
World Rope Challenge
Hint you do not need to know any values about
the earth just circumference formula.
Diameter
- Imagine a rope was lying on the ground and it
stretched - all the way around the world.
- How much more rope would be needed if it was to
be raised exactly 1 metre from the ground all the
way round.
Circumference of ANY circle is C pD
www.mathsrevision.com
1 metre above
World
Cw pDw
pDw
C1m p
(Dw 2)
1
1
C1m
pDw
2p
Dw
Difference
-
2p
6.28 metres
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