441 has two square roots; 21 or -21.
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21The square root of 441 is 21
The square root of 400 is 20, and the square root of 450 is approximately 21.21. Therefore, the square number between 400 and 450 is 441, which is the square of 21.
As a product of its prime factors: 3*3*7*7 = 441 Its square root is 21 or as 3*7 as the product of its prime factors
Take the square root of both sides. x2 = 441 So x = 21
21 multiplies to 21 to make it 441