This is a stupid website
Line Graph.
Most likely a bar or pie graph
a collumn graph
probably orographic bar graph would work the best!
A histogram
Anyone of them is fine. It doesn't really matter.
The type of graph you would use would be a PICTURE GRAPH or a TALLY CHART
line graph
any of these graphs would be it: bar graph line graph circle graph
Line Graph.
Most likely a bar or pie graph
Circumference of a circle = (pi) x diameter of the circle therefore,pi = Circumference/diameter or plot a graph of circumference against diameter using many circles and the slope of the line on the graph would be equal to pi.
If, by circle graph, you mean a pie graph then 450 will be 360*450/n degrees where n is the sum of all the sectors of the pie.
circle graph
circle graph /aka/ pie chart
a collumn graph
probably orographic bar graph would work the best!