圓錐及扇形英文數學題5(20分)

2*pie*25*100.8/360=14pei
2*pei*r=14pei
r=7
25^2=h^2+t^2
h=24
v=1/3*pei*7^2*24=392pei
1) r=7
2) h=24
2) capacity=392pei