Question

Please answer it now in two minutes

Answer 1

Answer:

3.9

Step-by-step explanation:

Pythagorean theorem:

a^2 + b^2 = c^2

a^2 + 1^2 = 4^2

a^2 + 1 = 16

a^2 = 15

a = sqrt(15)

a = 3.9

Answer a = 3.9 yards

Answer 2

Answer:

$\boxed{3.9}$

Step-by-step explanation:

The triangle is a right triangle.

Apply Pythagorean theorem.

$a^2 + b^2 = c^2$

$a^2 + 1^2 = 4^2$

$a^2 + 1 = 16$

$a^2 = 15$

$a=\sqrt{15}$

$a \approx 3.872983$