Question

The area of a vacant land in the form of a square is 36100 square metres. Then the length of the side of the land is:

• A. 160 metres
• B. 180 metres
• C. 190 metres
• D. 210 metres

Hint:

When evaluating square roots ending in an even number of zeros, you can separate the zeros from the base number: $$\sqrt{361\overline{00}} \rightarrow \sqrt{361} \text{ followed by one zero}$$ Since $\sqrt{361} = 19$, appending a single zero instantly gives the result 190.

Answer 1

The Correct Option is C

Step 1: Side of square.
Side $=\sqrt{36100}=190$ m (since $190^2=36100$). \[ \boxed{190 \text{ m}} \]