Evaluate after rationalising the denominator of `(25)/(sqrt(40) - sqrt(80))`, it being given that `sqrt(5) = 2.236 and sqrt(10) = 3.162`

Explanation

To evaluate the expression \( \frac{25}{\sqrt{40} - \sqrt{80}} \) after rationalizing the denominator, we will follow the steps below:

### Step 1: Simplify the square roots in the denominator
First, we simplify \( \sqrt{40} \) and \( \sqrt{80} \).

\[ \sqrt{40} = \sqrt{4 \times 10} = \sqrt{4} \times \sqrt{10} = 2\sqrt{10} \]
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