Find the diameter of the circle with the given circumference. Use 3.14 for pi . C=18 cm

Question

asked Jan 16, 2023 228k views

1 Answer

Grant Kamin · Answer 1 · 2023-01-21T05:24:42+0000

Answer:

$d=(18)/(\pi )$

Explanation:

We work our way backward to find the diameter.

Circumference of a Circle Formula:

$C=2\pi r$

r is radius , 2*radius = diameter.

Given information: C=18 cm , pi=3.14.

$C=2\pi r\\18=2\pi r\\$

Get r by itself.

$r=18/2\pi\\r=9/\pi$

r≈2.864788976

2*r=d

$2*9/\pi =diameter\\d=(18)/(\pi )$