The master builder has an iron hanging weight with a bottom diameter of 4cm and a height of 6cm. It is solid. If iron weighs 7.8 grams per cubic centimeter, how many grams does the hanging weight weigh?
砌墙师傅有一个底面直径4cm，高6cm的铁吊砣，它是实心的，如果每立方厘米的铁重7.8克，这个吊砣重多少克？
<result>367.38</result>