Surds - Applications of Surds

Surds - Applications of Surds

TGM Original Questions

A rectangular prism has a square base. The length of each side of the square base is \(\left( \sqrt{7}-\sqrt{5} \right)\)m and the volume of the block is \(\left( 5\sqrt{7}-3\sqrt{5} \right)\)m3. Find, without using a calculator, the height of the block in the form of \(a\sqrt{7}+b\sqrt{5}\).

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Answer:Height \(=\left(\dfrac{15}{2}\sqrt7+\dfrac{17}{2}\sqrt5\right)\text{ m}\).

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