Question

finding side lengths fin

1. area = 441 $cm^{2}$

Explanation:

Step1: Recall square area formula

The area of a square is $A = s^2$, where $s$ is side length.

Step2: Substitute given area

Substitute $A=441$ into the formula: $441 = s^2$

Step3: Solve for side length

Take square root of both sides: $s = \sqrt{441}$

Answer:

$21$ cm