0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144
145
145 cm is less.
Ralph likes numbers that are perfect squares but not numbers that are one less than a perfect square. Perfect squares are numbers that can be expressed as the product of an integer multiplied by itself (e.g. 25 = 5 x 5, 400 = 20 x 20, 144 = 12 x 12). Numbers that are one less than a perfect square do not fit this pattern (e.g. 24, 300, 145). Ralph's preference seems to be for the neat, symmetric nature of perfect squares.
The square root of 145 is 12.04 (approx). Since the square root of 144 is 12, it is easy to approximate the square root of 145 because 145 is only very slightly higher than 144.
9 (81 + 64 = 145)
5
Yes, in so far as all numbers are squares (of some number). But it is not a perfect square.
Adding makes more. Subtracting makes less. e.g. 123 +45 168 === which is more that the two initial numbers. 145 -23 122 === which is less than the initial number (145).
Less
greater
Oh, dude, let me put on my detective hat for this riveting mystery. So, Sally likes numbers that are perfect squares but not numbers that are just one more than a perfect square. In this case, she must like 144 because it's a perfect square, but not 145 because it's just one more. Case closed, Sherlock.
An angle of 145 degrees is an obtuse angle because it is greater than 90 but less than 180 degrees