Okay, for my science homework Ive been given a table that I have to turn into a pie chart! Which I must say I'm pretty useless! I am only 12 so no technical term, but I am at a grammar school, so I will understand a bit :)
Gas Amount in the Air
Nitrogen 78%
Oxygen 21%
Argon 0.9%
Other Gases (including helium, methane and carbon dioxide) 0.1%
It says; Draw a pie chart to show the composition of the air. You can draw it by hand using a compass and a protractor (Which I have done, I have drawn a circle and but a line from the center to the top) or you can use a computer program to plot the pie chart for you. Colour in the sections on your pie chart and provide a key.
Please help me, Its in for tomorrow, and I dont have a clue! Many thanks, in advance!
Gas Amount in the Air
Nitrogen 78%
Oxygen 21%
Argon 0.9%
Other Gases (including helium, methane and carbon dioxide) 0.1%
It says; Draw a pie chart to show the composition of the air. You can draw it by hand using a compass and a protractor (Which I have done, I have drawn a circle and but a line from the center to the top) or you can use a computer program to plot the pie chart for you. Colour in the sections on your pie chart and provide a key.
Please help me, Its in for tomorrow, and I dont have a clue! Many thanks, in advance!
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You have a circle with a center. What you have to do is to divide the area into regions (pizza slices) proportional to each gas.
There are 360 degrees in a complete circle....so, nitrogen will be a 'slice' of 78% of 100% of 360 degrees = 280.8 degrees..........so, draw the 'slice' of nitrogen at 281 degrees............and so on
Oxygen will be 76 degrees, Argon is 3 degrees and Other gases will be less than half degree.
Note : all the slices don't add up exactly to 360 degrees because of not using the precise calculated values..........you can't measure these exact values anyway, so fake the small slices a little to make it look right..........everybody doe's it.
A good idea is to note the exact calculated values on each slice or on the key, to show that you did the calculations correctly.
There are 360 degrees in a complete circle....so, nitrogen will be a 'slice' of 78% of 100% of 360 degrees = 280.8 degrees..........so, draw the 'slice' of nitrogen at 281 degrees............and so on
Oxygen will be 76 degrees, Argon is 3 degrees and Other gases will be less than half degree.
Note : all the slices don't add up exactly to 360 degrees because of not using the precise calculated values..........you can't measure these exact values anyway, so fake the small slices a little to make it look right..........everybody doe's it.
A good idea is to note the exact calculated values on each slice or on the key, to show that you did the calculations correctly.