QUESTION IMAGE
Question
the volume of this cylinder is 11,335.4 cubic millimeters. what is the radius? round your answer to the nearest hundredth. r ≈ millimeters
Step1: 写出圆柱体积公式
圆柱体积公式为 \(V = \pi r^{2}h\),其中\(V\)是体积,\(r\)是半径,\(h\)是高。已知\(V = 11335.4\)立方毫米,\(h = 10\)毫米,\(\pi\)取\(3.14\)。
Step2: 代入已知值求解\(r^{2}\)
将值代入公式得\(11335.4=3.14\times r^{2}\times10\),先计算\(3.14\times10 = 31.4\),则\(r^{2}=\frac{11335.4}{31.4}\)。
\(r^{2}=361\)。
Step3: 求解\(r\)
因为\(r^{2}=361\),所以\(r=\sqrt{361}\),\(r = 19.00\)(毫米)。
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\(19.00\)