The diagram shows are square with perimeter 40cm
Work out the percentage of the area inside the square that is shaded

22.11%

Step-by-step explanation:

First, use the Pythagorean theorem to determine the length of , which in this case is . Then, find the remaining space by calculating the empty space.

On the left:

On the right:

Then,

Approximate decimal form is -77.89 (or 77.89)

Therefore, the shaded area is

i'm not entirely sure

step-by-step explanation:

if you ask home depot or lowe's they might be able to you out