Question

In order to make a doughnut, a circular piece of dough that has a diameter of 2 inches is cut out of the center of a larger circular piece of dough that is 5 inches in diameter. What is the surface area of the top of the doughnut? You may leave your answers in terms of π.

Answer 1

5.2π

Explanation:

Inner circle area = π

Outer circle area = 2.5π

surface area = 2.5π-π = 1.5π

Answer 2

Answer: :5.2π

Step-by-step explanation: Inner circle area = π

Outer circle area = 2.5π

surface area = 2.5π-π = 1.5π