Answer:
Explanation:
To determine the minimum area of the piece of fabric Jonna needs, we need to calculate the diameter of the circle after adding 2 inches to the radius.
The radius of the pillow is half its diameter, which is 15/2 = 7.5 inches.
When Jonna adds 2 inches to the radius, the new radius becomes 7.5 + 2 = 9.5 inches.
The diameter of the circle with the new radius is 2 x 9.5 = 19 inches.
Therefore, Jonna needs to cut a circular piece of fabric with a diameter of 19 inches.
To calculate the minimum area of the fabric, we need to use the formula for the area of a circle:
Area = π x (radius)^2
The radius is 9.5 inches, so:
Area = π x (9.5)^2
Area = π x 90.25
Area ≈ 283.77 square inches
Therefore, Jonna needs a piece of fabric with a minimum area of approximately 283.77 square inches.