Answer:
Exactly 26 cookies fit and there would be 0.75 of cookie space left over.
Explanation:
In this case, we must calculate the area of a cookie and the total area of the cookie tray,
give us the diameter of the cookie, we need the radius, we know that the radius is half the diameter, so:
r = d / 2 = 1/2
the area would be:
A = pi * r ^ 2
replacing:
A = 3.14 * (1/2) ^ 2
A = 0.785
The area for each cookie is 0.785 in ^ 2
Now the area of the cookie tray would be:
A = 7 * 3
A = 21 in ^ 2
Therefore a total of:
21 / 0.785 = 26.75
Which means that exactly 26 cookies fit and there would be 0.75 of cookie space left over.