Question

Find the length of the side of a square whose area is 441 m².

Answer 1

Let the length of the side of the square be x m. Area of square = (x)² = 441 m²  

^{x =} √441

The square root of 441 can be calculated as follows.

∴ x = 21 m

Hence, the length of the side of the square is 21 m.