Question

How long is the diagonal of this rectangul

Answer 1

We gots a right triangle withe legs 8 and 15

remember if we got a right triangle with legs length a and b and hytponuse c then
a²+b²=c²

so

diagonal=c

so
8²+15²=c²
64+225=c²
289=c²
sqrt both sides
17=c
the diagonal is 17in