Question

Your friend is looking at laptops for college, and is comparing the different

Answer 1

Given:

$d = 13.3\ in$

$w = 11.3\ in$

$d=\sqrt{w^2+h^2}$

To find:

The value of h.

Solution:

We have,

$d=\sqrt{w^2+h^2}$

Substituting $d = 13.3, w = 11.3$, we get

$13.3=\sqrt{11.3^2+h^2}$

Taking square on both sides.

$176.89=127.69+h^2$

$176.89-127.69=h^2$

$49.2=h^2$

Taking square root on both sides, we get

$\pm 7.01427=h$

$h\approx \pm 7$

Height cannot be negative so $h=7\ in$.

Therefore, the correct option is A.