Question

A square has an area of 54 ft2. What
is the length of a diagonal (in feet)?

Answer 1

10.39 or √108

Explanation:

All sides in a square are congruent and the area is l×w. so sides must be √54. then using Pythagorean formula.

`{ √(54) }^(2) + { √(54) }^(2) = {c }^(2)`

then you get 108=c^2 so you take the square root of both sides. leaving c=√108 or about 10.39