Question

Plz tell me it's full and correct solution step by step​

Answer 1

Answer:

I DO NOT KNOW SORRY

Step-by-step explanation:

Answer 2

Answer:

1) The square root must end in a 5. 30^2=900. 40^2=1600. 1225 is roughly half way and 35 is exactly half way.

2) Note that we can estimate the square root of 512 to be somewhere between 22 (as 22-squared equals 484) and 23 (as 23-squared 529).

Explanation for 1)