Answer:
Area of one side of mini DVD = 15π or 47.12 cm²
Explanation:
The radius of the mini DVD is;r = 4cm.
Area of a circle = πr²
Thus, Area of mini DVD = π × 4² = 16π
Now,we are told the mini DVD has a hole with a radius of 1 cm.
Area of hole = π × 1² = π
To find the area of one side of the mini DVD, we have to subtract the area of the hole from the area of the DVD.
Thus;
Area of one side of mini DVD = 16π - π
= 15π = 47.12 cm²