mrs flinch first grade class was holding a used book sale. some books were sold for $0.25 and others sold for $0.35. the first customer spent $0.35 for 11 books. how many $0.25 books and $0.35 books did the customer buy?

idk sorry

Step-by-step explanation:

The circumference of a circle is 2pir, or pi x d.
the area of a circle is pir^2.
to find the radius, divide the circumference by 3.14 (pi), and then by 2.
94.2/3.14 = 30.
30/2 = 15.
our radius is 15.
now that we have this information, we can find the area using our formula.
our formula is   pi (3.14) x r^2 (radius squared).
15^2 = 225
225 x 3.14 = 706.5
the area of the circle is 706.5 cm^2.
i hope this !