witch is a better approximation of the square root of twenty 4.5 and 4.47 explain because i dont know?​

4.47

Step-by-step explanation:

What square  roots are having √20 in between them?...

√16 = 4                         √20 ≈ a number between 4 and 5         √25=5

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 16 is 4 away from  20                     25 is 5 away form 20

so √20 is closer to √16 (=4)  

so a better approximation is the one closer to 4

so is 4.47

i think its 7.6

if so your welcome