geometry
posted by Ariana .
round to the nearest tenth. a rectangular plot of land is 80 meters wide and 98 meters long. Find the length of the diagonal and if necessary, round to the nearest tenth.

This calls for the Pythagorean Theorem.
a^2 + b^2 = c^2
80^2 + 98^2 = c^2
6,400 + 9,604 = c^2
16,004 = c^2
126.506 = 126.5 = c