Answer
$41.9 \ m$
Work Step by Step
Since we have a right triangle with legs a, b and the hypotenuse c, then by the Pythagorean theorem, we have $$c^2=a^2+b^2.$$
Thus the hypotenuse is given by
$$
c=\sqrt{a^2+b^2}=\sqrt{29.1^2+30.2^2}=41.9 \ m
.$$
