TOP QUESTION:
a= one leg
b= other leg
c= hypotenuse
a^2 + b^2= c^2
plug in known numbers
(3)^2 + (2)^2= c^2
9 + 4= c^2
13= c^2
take the square root of both sides
√13= c
13 is not a perfect square
ANSWER: (C) √13 cm
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BOTTOM QUESTION:
a= one leg
b= other leg
c= hypotenuse
a^2 + b^2= c^2
plug in known numbers
(6)^2 + (10)^2= c^2
36 + 100= c^2
136= c^2
take square root of both sides
√136= c
136 is not a perfect square
ANSWER: (D) √136 ft
Hope this helps! :)