Task 4
Drag the slider (at bottom) slowly to the right and stop when the thick black arc takes up 3/4 of the circle.
Sketch your diagram above on your vertical surface, and answer this question there too: How long is this thick black arc now?
Drag the slider (at bottom) slowly to the right and stop when the thick black arc takes up 3/4 of the circle.
Sketch the diagram above on your vertical surface, and answer the question there too. What is the area of the white sector (shaded region)?