Question

In a class, 21 students have black hair, 11 students have blonde hair, 9 students have brown hair and 4 students have red hair. Determine the sector angles needed to construct a circle graph. Determine a name for the circle graph.

Answer 1

Total =45

Black hair=21*360/45=168
Blonde=11*360/45=88
Brown=9*360/45=72
Red=4*360/45=32