Question

Find the diameter and radius of a circle with and 18 inch circumference

Answer 1

Answer: radius= 2.866

Diameter = 5.732

Explanation:

Circumference of a circle is 2pir

Circumference = 2pir

Circumference =18inch

18=2pir

Pi= 3.14

18= 2×3.14×r

R= 18/2×3.14

R= 2.866

R= ~3inches

Diameter = 2radii

Diameter= 2×radius

Diameter = 2×2.866

Diameter = 5.732

Diameter = ~6

Answer 2

Explanation:

`2 * \pi \: * r = 18 \\ (2\pi \: r)/(2\pi) = (18)/(2\pi) \\ r adius= 2.86in \\ diameter = 5.72in`