V=(1/3)*3.14*[(5/2)^2]*7
You don't have a calculator?
http://www.google.com/search?hl=en&q=%281%2F3%29*3.14*%28%285%2F2%29%5E2%29*7&oq=%281%2F3%29*3.14*%28%285%2F2%29%5E2%29*7&aq=f&aqi=&aql=&gs_l=serp.3...18121.25039.0.25967.4.4.0.0.0.0.203.353.2j0j1.3.0...0.0.sdDPJSM3fRg
Google does not like square brackets