19
What is 1/20 as a decimal?
2 answers:
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Answer:
dm
Step-by-step explanation:
A square's diagonal cuts across the square, making two right triangles where the diagonal is the hypotenuse.
We have a right triangle with a hypotenuse of 29, and two legs that are the same length (because they are sides of a square)
So, we can use pythagoreans theorem to find the lengths of the legs, or sides of the square.
Now that we have a side length of , we just have to multiply that by 4, since a square has 4 sides. This leaves us with a final perimeter of: