19 squared

19² = 19 × 19 = 361

To square a number, multiply it by itself. 19 squared is written 19² or 19^2, and the answer is 361.

How to work out 19 squared

Direct: 19 × 19 = 361.
From the previous square: 18² = 324, and 19² = 324 + (2 × 19 − 1) = 324 + 37 = 361.
Split the number: 19 = 10 + 9, so 19² = 10² + 2 × 10 × 9 + 9² = 100 + 180 + 81 = 361.

Related

19 cubed = 6,859
The square root of 361 is 19, so 361 is a perfect square.

Squares near 19

Number	Squared
15	225
16	256
17	289
18	324
20	400
21	441
22	484
23	529

Need another number? Use the exponent calculator or see all squares and cubes.