Bill and Ted are at the same place, but in separate cars. Bill drives north for 3 miles, and Ted drives south for 3 miles. The two each make 90 degree left turns, and drive another 4 miles.
How far apart are Bill and Ted?
Spoiler
The answer is 10 miles.
If you draw a diagram of the routes, and then draw a straight line from Bill to Ted you will have two adjoining right triangles. The triangles are equal. so the equation is this: 3squared + 4 squared = D squared 9+16=25squared square root of 25 = 5 there are two triangles… 5+5=10.
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