9 / 3.5 = 2.6 = 2 across
13 / 3.5 = 3.7 = 3 down
2 * 3 = 6 cookies
13 / 3.5 = 3.7 = 3 down
2 * 3 = 6 cookies
1. Calculate the usable length:
- Subtract the total space required around each cookie from the length of the sheet.
- Usable length = sheet length - (2 * space required)
In this case: Usable length = 13 inches - (2 * 0.25 inches) = 13 inches - 0.5 inches = 12.5 inches
2. Calculate the usable width:
- Subtract the total space required around each cookie from the width of the sheet.
- Usable width = sheet width - (2 * space required)
In this case: Usable width = 9 inches - (2 * 0.25 inches) = 9 inches - 0.5 inches = 8.5 inches
3. Calculate the area of each cookie:
- The area of a circle can be calculated using the formula A = π * r^2, where r is the radius of the circle.
- In this case, the radius of the cookie is half of its diameter, so the radius = 3 inches / 2 = 1.5 inches.
- Calculate the area of the cookie: A = π * (1.5 inches)^2
4. Calculate the area of the usable space on the cookie sheet:
- Multiply the usable length and usable width: Area = usable length * usable width
5. Divide the area of the usable space on the cookie sheet by the area of each cookie:
- Number of cookies = Area of usable space / Area of each cookie
Let's calculate it:
Usable length = 12.5 inches
Usable width = 8.5 inches
Area of each cookie = π * (1.5 inches)^2
Area of usable space = Usable length * Usable width
Number of cookies = Area of usable space / Area of each cookie