Step-by-step explanation:
Diameter =12 ft
i.e 2r=12
or, r=12/2 =6ft
SA =3πr²
=3(6)²π ft²
=3×36π ft²
=108π ft²
Answer:
108 pi ft^2
r=1/2d=6 ft
SA = 3pir^2= 3pi(6 ft)^2=108pi ft^2
