Answer:
around 29.7
Explanation:
We can make a rectangle two tringles
Using a^2 + b^2 = c^2 we can find the diagonal
40^2 + 9^2 = c^2
800 + 81 = c^2
sqrt 881 is 29.6816442
we can round this to around 29.7
The Answer is 360
cause u got to multiple
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