Puzzle 221
At the equator the radius of the earth is 6,378 km, so its circumference is almost exactly 40,000 km.
Imagine we had a long rope which went around the equator, this would of course be 40,000 km long.
If we now placed 1 metre sticks vertically all the way around and lay the rope on top of these sticks (so the rope would be 1m higher all the way around) how much extra rope would we require?
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Hint
Circumference = 2 x Radius x π.
Answer
6.28 metres, a lot less than you might think!
If we call the radius of the Earth R, then the difference between the two circumferences is:
2 x π x (R + 1) - 2 x π x R
= 2 x π metres
= 6.28 metres.
Puzzle 222
Take away eight of the matches below, and leave one matchstick behind.
There are no hidden matchsticks.
Note: this puzzle is not interactive, and cannot be clicked.
Puzzle Copyright © Lloyd King
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Hint
You'll need to think a little laterally.
Answer
If you look very carefully, you will see that there are actually two matchsticks under the other seven, so you can take away eight matchsticks and still leave one behind.
Puzzle 223
Can you scramble each of these 6-letter words, and then split them into two common 3-letter words?
For example: notify = fin toy.
helium
latest
almond
eldest
placed
radium
desert
wealth
tricky
funnel
Puzzle Copyright © Kevin Stone
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Answers
helium = hum + lie
latest = let + sat
almond = man + old
eldest = led + set
placed = cap + led
radium = air + mud
desert = red + set
wealth = law + the
tricky = cry + kit
funnel = elf + nun
Alternative Answers
The following answers use less common words.
helium = him + leu
helium = hue + mil
helium = hum + lei
latest = els + tat
almond = don + lam
almond = lam + nod
eldest = eld + set
eldest = els + ted
placed = pec + lad
radium = mud + ria
radium = amu + rid
radium = aid + rum
wealth = awl + the
wealth = haw + let
There are more answers with even rarer words, but I've chosen not to include those.
Puzzle 224
What are the next five letters in this sequence:
HDSOAW
HDHAGF
ATKHAATKM
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Hint
From common children's song.
Answer
CPHTA.
From:
Humpty Dumpty sat on a wall.
Humpty Dumpty had a great fall.
All the king's horses and all the king's men
Couldn't put Humpty together again.
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