a) 100 - (5+15+25+2+20+18)= 100 - 85 = 15
⇒ 15% din venit economiseste familia Mariei
b) cercul are 360°
5% ×360°= 5/100×360°=1/20×360°= 18°
15%×360°=15/100×360°= 54°
25%×360°=25/100×360°=1/4×360°=90°
2%×360°=2/100×360°= 7,2°=7°12'
20%×360°=20/100×360°=1/5×360°=72°
18%×360°=18/100×360°=64,8°=64°48'
c) diagrama este un cerc in care procentele vor reprezenta masurile unghiurilor aflate la punctul b.
