A cylindrical grain hoard has a base radius of 2 meters measured from the inside and a height of 3 meters. If each cubic meter of corn weighs about 750 kilograms, how many tons of corn can this grain store hold?
一个圆柱形粮囤，从里面量得底面半径是2米，高3米．如果每立方米玉米约重750千克，这个粮囤能装多少吨玉米？
<result>2.826</result>