Respuesta :
"The diameter is 10, therefore radius = 5. If arc length = 10, then angle = 10/5 = 2 radians 2 radians = 2/2pi = 1/pi of a complete circle.
Area of circle = pi * r^2 = 25pi.
Area of sector = angle * area of circle = 1/pi * 25pi = 25"
Area of circle = pi * r^2 = 25pi.
Area of sector = angle * area of circle = 1/pi * 25pi = 25"