Question 68027
CT is a diagonal of a square (squares have all sides equal to one sole digit)
When you look at two sides of the square and the diagonal you see ... ? A right triangle! The addition of the square of the two legs (the two sides) equals the square of the diagonal ... better yet when you have the legs being the same, the legs are found by looking at the diagonal. The legs are something times square root of 2.
legs = x units
diagonal = x*sqrt(2)
The legs are 6 units.
CA = 6 units