Kelso’s mom wants to put a floating blanket over the family’s circular wading pool to keep the heat in and the leaves out. The pool has a diameter of $10$ feet.

1. How many square feet of blanket will Kelso’s mother need?

   Hint (a):

   The formula to find the area of a circle is $\pi r^2$.

   Answer (a):

   $78.5$ sq ft

2. If the pool supply store charges $\$0.10$ per square foot for the blanket, how much will the material for the blanket cost?

   Hint (b):

   Multiply your answer for part (a) by $\$0.10$.

   Answer (b):

   $\$7.85$