Diagram lingkaran ajh,.pkai cra ya ,.mksh:)

[tex]360 - (81 + 81 + 63 + 55) \\ 360 - 280 = 80[/tex]
[tex] \frac{80}{360} \times 7200 = \frac{2}{9} \times 7200 = 1600[/tex]

Wiraswasta = 360 - (81+55+63+81)
= 360 - 280 = 80
W = 80/360 x7200
= 80 x 20 = 1600