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:

If area of a square is given, take the square root to get the side. Break large numbers into known squares.

Answer 1

The Correct Option is C

Step 1: Use formula for area of square
Area = \( \text{side}^2 \), so side = \( \sqrt{\text{Area}} \) Step 2: Take square root of 36100
\[ \sqrt{36100} = \sqrt{361 \times 100} = \sqrt{361} \times \sqrt{100} = 19 \times 10 = \boxed{190} \]