what's the square root of 7/25?

How do I figure it out?
I don't think I can simplify the 7, but the 25 becomes a 5?
but it wouldn't be 7/5?

http://www.google.com/#hl=en&sugexp=ldymls&pq=square%20root%207%2F25&xhr=t&q=square+root+(7/25)&cp=18&pf=p&sclient=psy&source=hp&aq=f&aqi=&aql=&oq=square+root+(7/25)&pbx=1&bav=on.2,or.r_gc.r_pw.&fp=9589d0f2bb20ed2d&biw=853&bih=564