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 Grass Roots (Posted on 2004-12-12)

You have been captured by a mad king, he has placed you in a large field, he says you are free to go once you have calculated the area of the field.

He has left you with 1 pencil, 1 piece of paper, and 1 30cm ruler.

What is the quickest way to work out the area of the field, so you can go home to your family?

NOTE, from any position inside the field you can see the entire perimeter, assume that the field has four straight sides, though the angles may all be different.

Also, the area of the field is large enough to make it impractical to measure with the ruler

 See The Solution Submitted by Juggler Rating: 4.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
 re: REAL SOLUTION | Comment 5 of 13 |
(In reply to REAL SOLUTION by Steven Lu)

... except that you can't measure energy output with a 30 cm ruler;  and you can't calculate very easily if your pencil and paper are burned up and you are dead from smoke inhalation.

On the other hand, if you're dead, then in a sense, you are free.  But since the problem's category is Shapes and not Tricks, even though the word "grass" is in the title, I don't think this is the correct answer.

Edited on December 12, 2004, 8:46 pm
 Posted by Larry on 2004-12-12 20:39:15

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