answersLogoWhite

0

Pie or 3.14 times the radius squared. Half of 9 is 4.5, that is your radius. Now 4.5 squared is 20.25. Take 20.25 and multiply 3.14 which = 63.585 or orund the answer up to 63.86

User Avatar

Wiki User

14y ago

What else can I help you with?