W B H F S K F V J P Z H S S H T J P P N W L A F P W P N T D S W S T R H S P L M V R G B I D P B D W S N R T C S R S F T D B K K F B O M F R L Z F R K Y P N J Z J S Z N M B J Q E R Z F Q Z V G Y F V P P F G F W Z W N R P L B J V R J H F K T Z U H F K Y F W J F S R S S W C Q R Q Y H R S O M W F P R Q J K H R N M B W S K B J Y D Q E T J Y P F D L R P F
Hint
You might find Pythagoras' theorem very useful [a2 + b2 = c2].
Answer
148 inches.
We can use Pythagoras' theorem if we draw an imaginary line across to create a right-angled triangle.
The hypotenuse is equal to the rope's length R. The bottom of the triangle is 48 inches. The vertical side is R − 8 (the difference between 20 inches and 12 inches).
Pythagoras' theorem tells us that:
a2 + b2 = c2
Where c is the hypotenuse.
This gives us:
482 + (R − 8)2 = R2
2304 + (R − 8)(R − 8) = R2
2304 + R2 − 16R + 64 = R2
2304 − 16R + 64 = 0
16R = 2368
R = 148
As required.
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Puzzle 3
Which one of these sentences is the odd one out? The answer is nothing to do with food or animals.
Jackals are mean, eager scavengers.
Koalas eat in the heat.
Sheep invariably munch old newspapers.
Seals are rare and hungry.
Foxes rich appetite never kicks.
