Question

lisa wants to replace a glass window in her restaurant. the window is in the shape of a square. its side lengths are 7 feet. suppose glass costs $7 for each square foot. how much will the glass cost to replace the window?

Explanation:

Step1: Calculate window area

The area of a square is $A = s^2$, where $s = 7$ feet. So $A=7^2=49$ square - feet.

Step2: Calculate total cost

The cost per square - foot is $\$7$. So the total cost $C$ is the area times the cost per square - foot, $C = 49\times7$.
$C=343$.

Answer:

343