Question

81000 is obviously not perfect square. Give reason.​

Answer 1

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It is because

$\sqrt{81000} = 284.60$

which is a decimal number.

Answer 2

Answer:

81000 is not a perfect square.

Step-by-step explanation:

A perfect square is a number that can be expressed as the product of two equal integers.

We're looking for a factor combination with equal numbers for X and Y (like 3x3) above. Notice there isn't a equal factor combination, that when multiplied together, produce the number 81,000. That means 81,000 is NOT a perfect square.