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To find out the number of degrees for each arc or section in the graph we multiply the percentage by 360°. When we want to draw a circle graph by ourselves we need to rewrite the percentages for each category into degrees of a circle and then use a protractor to make the graph.
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but how we convert a number to a percent
15 is 10% what number? in equation form is 15/10% = X. We need to first convert the percentage to an equivalent decimal to do our calculation. Converting a percentage to a decimal we remove the percentage sign and divide by 100. Converting 10% to a decimal; 10% = (10/100) = 0.10.
thanks a lot
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