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MegH07
So you should count the squared that the lines are on, and multiple it by 100, since that is the scale factor. 

The perimeter of the line would be 300+500+500 (about? It's a little hard to count) so that would be 1,300 which is closest to 1,380.
This is solved with the Pythagorean Theorem. Which is a^2 + b^2 = h^2
100 x 100 = 10,000
500 x 500 = 250,000
250,000 + 10,000 = 260,000
Now, to find the other part, we need the square root of 260,000, which is 509.9
Now, 100 + 500 + 509.9 = 1109.9

The petting zoo is 1109.9ft, which rounds to 1,380 ft

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