To solve this problem, simply sum all of the grocery expenses and then divide that total by 4...
Given:
Segment AC = 130 feet
Segment CD = 70 feet
To find r, the radius, I'll use the Pythagorean theorem since r is the hypotenuse.
Segment CE = r - 70 feet
Applying the Pythagorean theorem:
r² = 130² + (r - 70)²
r² = 16,900 + (r - 70)(r - 70)
r² = 16,900 + r² - 140r + 4,900
r² - r² + 140r = 16,900 + 4,900
140r = 21,800
r = 21,800 / 140
r = 155.71 feet
Therefore, the circle's radius measures 155.71 feet.
According to your definition, horses are the only creatures labeled as "not small". To determine the percentage, divide the number of small animals by the total number.
So, 7 dogs + 13 cats + 3 ferrets = 23 small animals
7 dogs + 13 cats + 3 ferrets + 4 horses = 27 total animals.
Thus,

The multiplication by 100 is necessary because dividing results in a decimal, and a percentage is a fraction of 100.
This leads us to the calculation which yields
85.18%