Square of 26
26 squared equals 676. Squares appear in area calculations, the Pythagorean theorem, and statistics (variance uses squared distances).
Squares obey quiet rules. Divided by 9, a square only ever leaves 0, 1, 4 or 7 — 1 here. On the last digit, squares end only in 0, 1, 4, 5, 6 or 9, and 6 fits. Between its neighbors, 625 sits 51 below and 729 sits 53 above — the square ladder widens by exactly two at every step. Double the base and the square quadruples: 52² = 2704, which is 4 × 676. Two anchors most worth memorizing in this range are 12² = 144 and 15² = 225 — the odd-step rule above is why knowing them pays off, because from any anchor the next square is one step along this page's ladder.
| Expression | Value |
|---|---|
| 26² | 676 |
Frequently asked questions
What is 26 squared?
26 squared is 676, because 26 × 26 = 676. The exponent 2 is why it is written 26².
What is 27 squared, next to 26²?
27² = 729, which is 53 more than 26² = 676. Each step up adds double the base plus one.
Where do squares show up in real problems?
Area of a square with side 26, distance in the Pythagorean theorem, and variance in statistics all use squared values.