i think k is 5 but if i am wrong srry hope it helped
Answer:
The hypotenuse is the longest side in a triangle.
a^2=b^2+c^2.
14^2=9^2+c^2.
c^2=196-81.
c^2=115.
c=√115.
c=10.72~11cm
i believe the answer is 14.93 dollars.
Step-by-step explanation: