Question

This is an outline of a chocolate chip cookie, how many squares are inside of this cookie? What’s the area of the cookie?

Answer 1

Let's use the side length of each square as 1 unit.

Looking at the image, the diameter of the circle is equal to 10 units.

The radius is equal to half the diameter, so the radius is equal to 5 units.

The area of the circle can be calculated with the formula below:

`\begin{gathered} A=\pi r^2 \\ A=3.1416\cdot5^2 \\ A=3.1416\cdot25 \\ A=78.54\text{ u}^2 \end{gathered}`

Therefore the circle area is equal to 78.54 square units. Since the area of each square is 1 square unit, the number of squares inside the cookie is 78.54.