The diameter is (16π)/π = 16, so the radius is 8.

Radius= π r

Circumference= 2π r

Diameter= 2(π r

Diameter= 2π r

Diameter= 2π r r

since circumference = 2π r which is = 16 π

so eq. (1) implies that Diameter= (Circumference) r

Diameter = 16 π r -

Since 2(Radius) = Diameter

so eq. (2) implies that

2(Radius) = 16 π r

Radius = 16/2 π r

^{2}Circumference= 2π r

Diameter= 2(π r

^{2})Diameter= 2π r

^{2}Diameter= 2π r r

**- (1)**since circumference = 2π r which is = 16 π

so eq. (1) implies that Diameter= (Circumference) r

Diameter = 16 π r -

**(2)**Since 2(Radius) = Diameter

so eq. (2) implies that

2(Radius) = 16 π r

Radius = 16/2 π r

**Therefore Radius = 8 π r**