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

User Abbadon
by
7.9k points

2 Answers

1 vote

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

User AlexTR
by
7.7k points
5 votes

Explanation:


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

User Ryan Rivest
by
8.5k points

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