How do i find the diagonal inches of the laptop if the height is 10in and the width is 24in?

You can use the Pythagorean theorem.

10^2+24^2=diagonal^2

Diagonal=26 inches

To find the diagonal length, use Pythagorean theorem:
a^2+b^2=c^2 where c represent diagonal length
Apply the information that we had from this problem into this formula
10^2+24^2=c^2
100+576=c^2
676=c^2
Sqauare root this
√676=√c^2
c=26. As a result, the diagonal length is 26 inches. Hope it help!