Question

I have a problem with a concept in math and I want to know how to solve it

Answer 1

Given

diameter = 5 inches

d: diameter

Procedure

the formula for the circumference of a circle is 2 x pi x r(radius).

r = d/2

r = 5/2 = 2.5 inches

`\begin{gathered} C=2\pi r \\ C=2\cdot3.14\cdot2.5 \\ C=15.7\text{ inches} \\ \end{gathered}`

The answer would 16 inches (rounded)