一米二有多长?(废话不用多说,

圆桌的规格不同,其直径大致有 150 厘米、160 厘米、170 厘米、180 厘米、200 厘米、220 厘米、240 厘米等,圆桌的底束或桌架 高度一般为 80 厘米.由于用餐客人的人数不同,因此,应根据客人的人数选择大小适宜的餐桌 :150 厘米的餐台适宜 6 位客人使用 ;160 厘米的餐台适宜 8 位客人使用 ;170 厘米的餐白适宜 8 10 位客人使用 ;180 厘米的餐台适宜 10~12 位客人使用 ;200 厘 米的餐台适宜 12~14 位客人使用 ;220 厘米的餐台适宜 14~16 位 客人使用 ;240 厘米的餐台适宜 16~18 做客人使用.方桌一般在零餐餐厅使用,其规格为 90 、 100 、 110 厘米见方.

V=1/3h(S上+√(S下*S上)+S下)
"S上"为台体上体面,"S下"为台体下底面,"h"为高
S上=1.2*0.8=0.96
S下=1*0.8=0.8
V=（1/3）*0.5*（0.96+（0.96*0.8）^0.5+0.8)
≈0.44

金丝楠木的价格除了与金丝的多少有关外,木材的年限不同,价格也会有差别.
如果你这个是上好的话,现在的价格大概在1000万~1300万之间

　　I will never forget that experience.
　　As I were still a child, there were a big hole in the place when live with water in it which is not too deep itself, about 1.2 meters. While, some places were too deep for me a little kid as at that time I was short and 1.2 meter was almost the depth to my chest.
　　It was a hot summer day whenmy neighbor was taken there to swim by his grandpa. Also, he called me as I was the best friend of him playing together in childhood. Still, I planed to learn swimming. So I agreed.
　　We got in the water and learned swimming in the shallow water. After a few days, he could swim presentable. Not as good as him, I could probably manage it, at least in the shallow water.
　　Once, we were playing in the water and got to the depths imperceptibly. At first, we could reach the buttom with our feet. However, after a few steps, we could not make it and I was unaware. I knew that it was bad as the water was too deep for me, even with the thought that I would die here. The depth of water was almost 1.8 meters. Suddenly, I fell into the water, for a time I was isolated into "two world" with oxgen. I was almost stuffy, and fortunately thanks to my friend's fast reflexes, he pulled me tightly with a foot in the mud and called his grandpa to help. When hearing the rescue, his grandpa swimmed to me and back to the bank, pulling me away from the death line and. Thus, I was "alive" agine.
　　That experience was in my memory forever as I was almost dead that time. How can I forget it ?
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先算出半径,再根据圆的面积公式进行计算

120元