Follow these instructions, and fill in the table for different values of the diameter. Round your answers to the hundredths place. Move the slider to roll the circle. As you roll the circle, the circumference of the circle unfolds along the x-axis and the length of the circumference appears below. Once you have completely rolled out the circumference, fill in the table for the specific diameter you used. Roll the circle back to its original position. Change the diameter by moving the blue dot on the y-axis. Repeat these steps for each new diameter that you choose

Diameter  Circumference      Ratio of Circumference to Diameter

 4     12.57                          3.14

 3      9.42                           3.14

 2      6.28                           3.14

 5       15.71                           3.14

5.57 .    17.51                           3.14

Explanation:

since there isn't any suggested answers i will give you the reason and hopefully you can figure it

south africa, or rather all of africa, has not been in the location in which it is nowadays throughout the geological past. after the super-continent pangaea started to break apart, gondwanaland, in which was africa, moved further south, and parts of it came to be very close to the south pole. because the climate in this part of the world is very cold due to the very dispersed sun rays in there, what is now south africa, started to freeze, and the conditions were right for the formation of glaciers. the glaciers existed up until the period when gondwanaland started to break apart and what is now africa started to move towards north, sp it warmed up and the glaciers melted.