A cylinder of gas has height 48 inches,and the base has radius 2 feet问 volume of the cylinder 和 surface area of the cylinder 那个大 (1feet = 12inches)答案是表面积大,但是如果单位都换成inch 的话 不是体积大么?到底怎
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![A cylinder of gas has height 48 inches,and the base has radius 2 feet问 volume of the cylinder 和 surface area of the cylinder 那个大 (1feet = 12inches)答案是表面积大,但是如果单位都换成inch 的话 不是体积大么?到底怎](/uploads/image/z/10233505-1-5.jpg?t=A+cylinder+of+gas+has+height+48+inches%2Cand+the+base+has+radius+2+feet%E9%97%AE+volume+of+the+cylinder+%E5%92%8C+surface+area+of+the+cylinder+%E9%82%A3%E4%B8%AA%E5%A4%A7+%EF%BC%881feet+%3D+12inches%EF%BC%89%E7%AD%94%E6%A1%88%E6%98%AF%E8%A1%A8%E9%9D%A2%E7%A7%AF%E5%A4%A7%2C%E4%BD%86%E6%98%AF%E5%A6%82%E6%9E%9C%E5%8D%95%E4%BD%8D%E9%83%BD%E6%8D%A2%E6%88%90inch+%E7%9A%84%E8%AF%9D+%E4%B8%8D%E6%98%AF%E4%BD%93%E7%A7%AF%E5%A4%A7%E4%B9%88%3F%E5%88%B0%E5%BA%95%E6%80%8E)
A cylinder of gas has height 48 inches,and the base has radius 2 feet问 volume of the cylinder 和 surface area of the cylinder 那个大 (1feet = 12inches)答案是表面积大,但是如果单位都换成inch 的话 不是体积大么?到底怎
A cylinder of gas has height 48 inches,and the base has radius 2 feet
问 volume of the cylinder 和 surface area of the cylinder 那个大 (1feet = 12inches)
答案是表面积大,但是如果单位都换成inch 的话 不是体积大么?
到底怎么算?
A cylinder of gas has height 48 inches,and the base has radius 2 feet问 volume of the cylinder 和 surface area of the cylinder 那个大 (1feet = 12inches)答案是表面积大,但是如果单位都换成inch 的话 不是体积大么?到底怎
统一单位:底面半径R=2feet=24inches
面积S=2πRh+2πR^2=2*24*48π+2*24*24*π=3456π (in^2)= 2.23π (m^2)
体积V=h*πR^2=48*24*24*π=27648π (in^3)=0.453π(m^3)
1平方英寸(in^2)=6.452平方厘米(cm^2)
1立方英寸(in^3)=16.3871立方厘米(cm^3)
此处关键在于单位.
国际单位制的基本单位为米(m)、千克(kg)、秒(s)、安培(A)、开尔文(K)、摩尔(mol)和坎德拉(cd).PS:高中物理知识哈!应该没忘掉吧!
统一为国际单位才能够进行比较!