Question

the circumference of a circle is 31.4 cm the diameter of the circle is 10 cm which expression best represents the value of pi​

Answer 1

π = 3.14

Step-by-step explanation:

Circumference of a circle is the length of the circle if it was straightened out to form a line segment. It is the total length of the circle and it is also referred to as the perimeter of the circle. The formula for the circumference of a circle (C) is given by the formula:

`C=2\pi r`

Where r is the radius of the circle.

Given that C = 31.4 cm and the diameter (d) = 10 cm

`r=(d)/(2)=(10)/(2)=5cm`

`C=2\pi r\\\pi =(C)/(2r)`

Substituting:

`\pi =(C)/(2r)=(31.4)/(2*5) =3.14\\\pi =3.14`