To find the area of the entire park represented on the scale drawing, you can use the formula for the area of a square, which is:
Given that the dimensions of the park are 20 inches by 20 inches, the area of the entire park is:
Now, let's find the area of the picnic area, which has dimensions of 10 inches by 10 inches:
To find what percent of the park is the picnic area, use the formula:
Substituting in the areas we found:
Thus, the percentage of the park that is the picnic area is 25%.