QUESTION IMAGE
Question
what is the volume of this sphere?
round your answer to the nearest hundredth.
2.6 m
cubic meters
Step1: 求半径
已知直径\(d = 2.6m\),根据半径\(r=\frac{d}{2}\),可得\(r=\frac{2.6}{2}=1.3m\)。
Step2: 代入球体体积公式
球体体积公式为\(V = \frac{4}{3}\pi r^{3}\),将\(r = 1.3\)代入公式,得到\(V=\frac{4}{3}\times\pi\times(1.3)^{3}\)。
先计算\((1.3)^{3}=1.3\times1.3\times1.3 = 2.197\),则\(V=\frac{4}{3}\times\pi\times2.197\)。
\(\frac{4}{3}\times2.197=\frac{8.788}{3}\approx2.9293\),所以\(V\approx2.9293\times\pi\)。
取\(\pi\approx3.14\),则\(V\approx2.9293\times3.14 = 9.197002\approx9.20\)(\(m^{3}\))(精确到百分位)。
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\(9.20\)