Answer
The given lengths can be side lengths of a right triangle.
Work Step by Step
Using the Pythagorean theorem to determine if this is a right triangle:
$a^2+b^2=c^2$
Plug in the given values:
$4^2+(7.5)^2=(8.5)^2$
$72.25=72.25$
The given lengths can be side lengths of a right triangle.
