Answer:
Well the answer is 11.1803398874989485 but without using a calculator, you can get close.
Step-by-step explanation:
We know that 12 squared is 144, so thats too much and 11 is 121. Thats the closest we can get without decimals. If you had to do decimals, it would be a very low decimal because it is so close to 11 squared.
