



 
Hi Daryl. Use the Pythagorean Theorem to find the length. Call the length of the hypotenuse (that's the side opposite the right angle) h and call the length of the two legs (the other sides) a and b. When you do this, the Pythagorean Theorem gives this relationship:
Since h, a and b are all larger than zero, you can see from the expression above that h is larger than both a and b. Thus both a and b are 12.6 and you can find h quickly with this and then you can add up the sides to get the perimeter. Cheers,  


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