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To square a number, you multiply it by itself. In this case, 21 x 21 is 441

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โˆ™ 2013-10-07 22:15:05
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Q: How do you find the square of 21?
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How do you find square root of square 21?

The square root and square functions are inverse of one another EXCEPT that square root is not really a function: it is a 1-to-many mapping. So sqrt(square(21)) = sqrt(441) = ±21


How many square feet in a 21' x 21' room?

21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.21*21 = 441 square feet.


What is the square of 21?

the square of 21 is 441


What is the square root of -21?

The square root of -21 is: 4.582576 i


What is the square root of 21?

The square root of 21 is 4.58257569495584.


Square root of 21?

The square root of 21 is 4.58257569495584.


Is 21 a square number?

21 is not the square of an integer. The closest square number is 25.


How large is 21 square meters?

21 square meters is 226.04 square feet.


What is 21 by 21 feet?

21 feet by 21 feet is a square having an area of 441 square feet.


How many square yards is 21 feet by 21 feet?

21 feet by 21 feet is 441 square feet which converts to 49 square yards.


What is the square rout of 21?

There is no exact value for the square root of 21. √21 = 4.5825757 (7dp)


What is the square root of 441?

21The square root of 441 is 21


What is the area of a square with a side length of 21 yards?

Area = 21*21 = 441 square yards


How do you find the square root of 21?

21 is not a perfect square, and none of its factors (1, 3, 7, 21) are perfect squares either, so √21 is already simplified. The easiest way to compute an approximate value is using a calculator; if you are familiar with calculus, Newton's method works to find an approximation manually. Either way, it is approximately equal to 4.58258.


What the square of 21?

It is: 21 times 21 = 441


How many square feet are in a 21 foot x 21 foot room?

21 x 21 = 441 square feet


The wrestling mat is 21 feet square what is the area of the wrestling mat?

21*21 = 441 square feet.


What is the area of a square computer screen with 21 inch sides?

21 x 21 = 441 square inches


What is the actual answer of square root of 441?

441 has two square roots; 21 or -21.


Is 4.5 the square root of 21?

4.6 is a better approximation to the square root of 21.


What are the square roots of 441?

They are 21 and -21.


How many square feet are in 21 yards?

Square feet measure area, and yards measure length. If you mean FEET in 21 yards, the answer is 63 (3 times 21). If you mean square feet in 21 SQUARE YARDS, the answer is 189 (three times three times 21).


What are the square root of 21?

The square roots of 21 are 4.5826 (rounded) and the negative of the same number.


What is the area of a square if it had a 21 meter?

area of square, formula:A=a*a or a^2plug the knownA=21*21A= 441 m^2 ;))


What is the principle square root of 49 over 21 squared?

(√(a))²=a The square root and the square cancel to leave just 49/21■