Question

What is the length of side of a square, if the area of square is 441 cm²?

• A. 31 cm
• B. 39 cm
• C. 21 cm
• D. 29 cm

Answer 1

The correct option is C 21 cm

Area of a square = 441 cm²

We know that;

Area of a square = side²

441 = side²

Side = <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> $\sqrt{441}$ = 21

Therefore, length of side of square is 21 cm.