Application of Direct Proportion
Application of Direct Proportion
Secondary 2
The volume of water, \(V\)m\(^{3}\), flowing through a cylindrical pipe is directly proportional to the square of its cross-sectional radius, \(R\)m. When the radius is \(0.2\)m, the volume is \(12\)m\(^{3}\).
- Find the value of \(V\) when \(R=0.5\).
- If the radius is increased by \(100\%\), find the percentage increase in the volume.
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Answer:(a) \(75\text{ m}^3\). (b) \(300\%\) increase.
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