Happy 11th birthday, kiddo. Love the T shirt... I'm 76 so what should I have printed under the square root sign? No tables or calculator and you have got 10 seconds to find the answer!! (Is that fair?)
How nice that he posed for you. Happy birthday to your young man. I love that tee. @lostphojo I had to cheat - 5776. It would make a great tee shirt. Mine would be 3969
Oh dear, I had to use a calculator to figure out the square root.
http://mathcentral.uregina.ca/QQ/database/QQ.09.06/s/don1.html