Answer: 360.3 mm²
Step-by-step explanation:
the difference between the outer edge and the inner edge of the coin is the area of the coin - the area of the hole.
The formula for determining the area of a circle is expressed as
Area = πr²
Where
r represents the radius of the circle.
π is a constant whose value is 3.14
Considering the coin,
diameter = 22 mm
Radius = diameter/2 = 22/2 = 11 mm
Area = 3.14 × 11² = 379.94 mm²
Considering the hole,
diameter = 5 mm
Radius = 5/2 = 2.5 mm
Area = 3.14 × 2.5² = 19.625 mm²
The difference between the outer edge and the inner edge of the coin is
379.94 - 19.625 = 360.3 mm²
Answer:
53.4 mm
Step-by-step explanation:
i did the quiz and got it right thank me later
