The volume is 1024. the base lengths are all 16 inches
6000 - 1800 = 4200
4200/4 = 1050
so she donated 25% to charity
Exactly one activity:
246None of the activities :
1At least one activity:
74Snowboarding and Ice skating but not skiing:
5Snowboarding or ice skating but not skiing:
132.
Only skiing :
119.
The diagram is in the attachment.