121 is perfect three digit square palindrome. (11 x 11)
So is 484 (22 x 22) and 676 (26 x 26)
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729
729, cube of 9 and square of 27
There are a total of 5 positive three-digit perfect cubes that are even. To find this, we first determine the range of three-digit perfect cubes, which is from 46 to 96. Then, we identify the even perfect cubes within this range, which are 64, 216, 512, 729, and 1000.
Well, let's see. Perfect cubes that are two digits: 27 64 Could it be 27? Well, 2+7 is 9, and that's a perfect square with a square root of 3, and the cube root of 27 is three. Looks like we've found our answer, especially since 6+4 = 10, which is NOT a perfect square.
10^2 = 6^2 + 8^2 ie 100 = 36 + 64