A square calendar has sides are 9 inches long. what is the calendar's area?

By definition, the area of a square is given by:

A=L^2

Where,

L: length of the square side

For this case, the length of the square side is given by:

L=9

Substituting values we have:

A=9^2

A=81in^2

Answer:

the calendar area is:

A=81in^2