IS THE SQUARE ROOT OF 21

A) 5 AND 6
b) 7 AND 8
c) 4 AND 5
d) 6 AND 7

c. 4 and 5

(it's 4.5825757, 4 and 5 are the closest to that number)

3500 cm2=___________L

To find the square root of 21, we can use a calculator or use long division method. However, it is important to note that the square root of 21 is an irrational number, meaning it cannot be written exactly as a fraction or a finite decimal.

Using a calculator, we can find that the square root of 21 is approximately 4.58257.

Therefore, none of the given options (A) 5 and 6, (B) 7 and 8, (C) 4 and 5, (D) 6 and 7 are correct.