Question

Estimate the square root of 479

Answer 1

Solution :-

We have to calculate estimated square root of 479.

Since : 400 < 479 < 625 and √400 = 20 and √625 = 25

Taking the square root, we get : 20 < √479 < 25

But it is not very close to the number yet.

We also know that, 21² = 441 and 22² = 484

Therefore, 21 < √479 < 22

The number 479 is much closer to 484 than 441

Hence, √479 is approximately equal to 22

Estimated square root of 479 is 22.

Answer.

Answer 2

A square root of a number a is a number y such that y² = a.

 For example, 4 and -4 are square roots of 16 because 4² = (-4)² = 16.


The square root of 479 is 21.886068628.

So, estimated value is 22.

Hope it helps!