21
The square root of 441 is 21
441 has two square roots; 21 or -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*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.
Yes it is. Do you want to know something spectacular? Well, it's not too great. But if you switch 21 around to make 12, 12 is the square root of 144, which has the same numbers as 441! Isn't that cool. So if you know what 12 is the square root of, you know what 21 is the square root of. WARNING: THIS DOES NOT WORK WITH ALL NUMBERS!!!!!!!!!!!!
441 square root
441 has two square roots; 21 or -21.
21
It is 21
Yes because 21 is a rational number
12
21
Yes, they are.
i21 = square root of (-441)
length x length = area length = square root of 441= 21 inches
√441 = √(3^2 × 7^2) = 3 × 7.
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