Question

What is the value of x?

Answer 1

x = 41 cm

Here is why:

For this question we have to use the pythagorean theorem, which is used for right triangles. The hypotenuse will always be the last in this theorem.

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

Plug in.

$9^2+40^2=c^2$

$81+1,600=c^2$

Add together.

$1,681=c^2$

Now we will find the square root of 1,681, since c is squared.

$\sqrt{1,681}$

= 41 cm