# Is 81 a perfect square or perfect cube?

## Is 81 a perfect square or perfect cube?

The perfect squares are the squares of the whole numbers: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100 is the number that gives n when multiplied by itself. For example, Here are the square roots of all the perfect squares from 1 to 100. 1. Estimate – first, get as close as you can by finding two perfect square roots your number is between.

There are 30 perfect squares between 1 and 1000. They are 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225, 256, 289, 324, 361, 400, 441, 484, 529, 576, 625, 676, 729, 784, 841, 900 and 961. A number is a perfect square or a square number if its square root is an integer, which means it is an integer’s product with itself.

When a polynomial is multiplied by itself, then it is a perfect square. Example – this polynomial ax 2 + bx + c; if b 2 = 4ac is a perfect square. Perfect Square Formula is given as, (a+b) 2 = a 2+2ab+b 2.

A perfect square is a number that can be expressed as the product of two equal integers. 9 9 is a perfect square because it can be expressed as 3 * 3 (the product of two equal integers)

83 is a number that is not a perfect square, meaning it does not have a natural number as its square root. Also, its square root cannot be expressed as a fraction of the form p/q which tells us that the square root of 83 is an irrational number.

Yes, since 81 has more than two factors i.e. 1, 3, 9, 27, 81. In other words, 81 is a composite number because 81 has more than 2 factors.

Explanation: To find the square root of 81 , or √81 , we have two find one number, that when multiplying itself, equals to 81 . That number is 9→ (9⋅9=81) Therefore √81=9 .

Answer: The perfect squares are the squares of the whole numbers: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100 … Here are the square roots of all the perfect squares from 1 to 100. 1.

Explanation: 81=9⋅9 then the square root of √81=9 .

The number 81 on prime factorization gives 3 × 3 × 3 × 3. Here, the prime factor 3 is not in the power of 3. Therefore the cube root of 81 is irrational, hence 81 is not a perfect cube.

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