Respuesta :
The square root of 400 is 20. It's a real number, 20 x 20 = 400
√400 = 20
I hope this helps!
Answer:
Step-by-step explanation:
20*20 is =400
so i believe it is a real number and a whole number
*if you looking to classify it i believe it would be a real, whole,rational, and a integer
hope that helped good luck!