Question

What is the length of the hypotenuse of the triangle? Write your answer as an exact answer.

Answer 1

Answer:

AB = $\sqrt{65}$ units

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

AB² = AC² + BC²

       = 7² + 4²

       = 49 + 16

       = 65 ( take the square root of both sides )

AB = $\sqrt{65}$

Answer 2

Answer: the answer is c or 57

Step-by-step explanation:

we have to use the formula a^2+b^2=c^2

*it doesn’t matter what order we put them*

let: 7 be a^2 and 4 be b^2

7^2 is 49 and 4^2 is 8

49+8=57