Step by step
The question
Question: make a circle graph of math 8, art 5, music 7, sport 4.
A circle graph shows the parts of a whole as slices.
The whole circle is 360 degrees.
1 Find the total
First the whole: 8 plus 5 plus 7 plus 4 is 24.
2 Each part of 360°
Math: 8 out of 24, that is 1/3.
Of 360 degrees: 120°.
Art: 5 out of 24, of 360, is 75°.
Music: 7 out of 24, of 360, is 105°.
Sport: 4 out of 24, of 360, is 60°.
Careful!
The parts are counts, not percents.
Each one is out of the total, 24.
3 Draw the circle graph
We draw a circle and start at the top.
Math: a slice of 120°, going round like a clock.
Then art, 75°, and so on.
So the slices are math 120°, art 75°, music 105° and sport 60°.
4 Check
Let's check: the slices fill the circle: 120 plus 75 plus 105 plus 60 is 360.
So the answer is right!
Let's look back.
First: find the total.
Then: each part of 360°.
Then: draw the circle graph.
Last: check.