The diameter of the semicircle is 58 mm. The radius of each small circle is 5 mm.
What is the exact area of the shaded region in the figure below? Do NOT round at any point!
The radius of the semicircle is 58÷2= 29 mm The area of the semicircle is πR²/2= π×29²/2=841π/2=420,5 π mm² The area of each small circle is πr²= π×5²= 25 π mm² The area of the shaded region is 420,5π - 3×25π = 420,5π-75π=345,5π mm²
