From the top down:
From the worksheet, we can take pi as roughly 3.14
1.
l = 75/360 * 2pi *4
l = 5.23 cm (nearest hundredth)
2.
l = 130/360*10pi
I = 11.34cm (nearest hundredth)
3.
l = 75/360*2pi*6
l = 7.85cm
4.
l = 45/360*2pi*3
l = 2.36 cm (nearest hundredth)
5.
l = 80/360*1400pi
l = 976.89 cm (nearest hundredth)
