Question

The monthly expenditure of a family on different items is shown in the following table. Complete the following activity to calculate the related central angles. 

Activity:

Different items	Percentage of expenditure	Measure of central angle
Food	40	`40/100 xx 360^circ = square`
Clothing	20	`20/100 xx 360^circ = square`
Eduaction	30	`30/100 xx 360^circ = square`
Other expenditure	10	`10/100 xx 360^circ = square`
Total	100	360°

Answer 1

Activity:

Different items	Percentage of expenditure	Measure of central angle
Food	40	`40/100 xx 360^circ` = \[\boxed{144°}\]
Clothing	20	`20/100 xx 360^circ` = \[\boxed{72^°}\]
Eduaction	30	`30/100 xx 360^circ` = \[\boxed{108°}\]
Other expenditure	10	`10/100 xx 360^circ` = \[\boxed{36°}\]
Total	100	360°