Sketch the diagram above on your vertical surface, and answer the question there too. [br][br][b][color=#9900ff]If the central angle measures 180 degrees[/color][/b], how long is the [b]thick arc length [i]s ? [/i][/b]
Sketch the diagram above on your vertical surface, and answer the question there too. [br][br][b][color=#9900ff]If the central angle measures 180 degrees[/color][/b], [b]what is the area of the white sector (shaded region) ? [/b]