Answer:
The correct option is 4.
Step-by-step explanation:
According to the Pythagoras theorem, the sum of squares of two legs of a triangle is equal to the square of the hypotenuse of the triangle.
From the given figure it is clear that the length of one leg is 4 ft and the length of second leg is 7 ft.
Using Pythagoras theorem, we get
Taking square root both the sides.
The length of the hypotenuse is √(65) ft . Therefore the correct option is 4.