CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -Yes, the number 81 is a perfect square. (i.e) 92 = 81.

Detailed explanation-2: -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 .

Detailed explanation-3: -81 is not a perfect cube but 81 is a perfect square. 9*9 = 81.

Detailed explanation-4: -The square root of 81 is 9. This means that the square root of 81 is a rational number. Rational numbers can be written as simple fractions, or ratios, of integers.