Question

Shannon makes large cookies. These cookies are 22 inches in diameter. How much icing will she need to cover the top of each cookie?
Answer
11π in2
22π in2
484π in2
121π in2

Answer 1

\[A=\pi r^2\]

Answer 2

\[r=\frac{d}{2}\]

Answer 3

radius of each cookie = diameter/2 = 11 inches (those are pretty big cookies by the way!!)

so area of the surface of each cookie = pi times (radius)^2

so area = 11*11*22/7 = 38.14 square inches.