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the pythagoream theorem, a^2+b^2=c^2

1. 13in.

2. 31.6 yd.

3. 16.1 m.

Step-by-step explanation:

c is the hypotonus (the diagonal line on a right triangle)

if you are trying to find c, you square the two sides that are given and then add them up.

For example number 1:

So 5x5=25   and    12x12=144

add those two values together, 25+144=169

the last step is to find the square root of that last sum (169)

√169 = 13.

i think it might be a but you might want a second opinion