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the volume of this cylinder is 2,279.64 cubic inches. what is the radiu…

Question

the volume of this cylinder is 2,279.64 cubic inches. what is the radius? round your answer to the nearest hundredth. 6 in ( r approx ) inches

Explanation:

Step1: 写出圆柱体积公式

圆柱体积公式为 \(V=\pi r^{2}h\),其中 \(V = 2279.64\) 立方英寸,\(h = 6\) 英寸,\(\pi\) 取 \(3.14\)。

Step2: 代入已知值求解 \(r^{2}\)

将 \(V = 2279.64\),\(h = 6\),\(\pi = 3.14\) 代入公式 \(V=\pi r^{2}h\),得到 \(2279.64=3.14\times r^{2}\times6\)。
先计算 \(3.14\times6 = 18.84\),则 \(r^{2}=\frac{2279.64}{18.84}\)。
\(r^{2}=121\)。

Step3: 求解 \(r\)

因为 \(r^{2}=121\),所以 \(r=\sqrt{121}\)(\(r>0\),半径为正数),\(r = 11.00\)。

Answer:

\(11.00\)