How can prior knowledge help you?

for teachers it allows them to focus and adapt their teaching plan. for us, students it helps us to construct connections between new and old knowledge.

Explanation:

the answer is

r ≈5.641

plug in the area of 100 yards into the equation

100=

divide each side by pi

≈ 31.8309=

take the square root of each side to find r

=r

r ≈5.641

because they were not just any seashells they were sally's seashells