The circumference of a circle is equal to pi times the diameter. Which direct variation equation represents this situation?

The circumference of a circle is equal to pi times the diameter. The direct variation equation represents this situation is c=πd

Step-by-step explanation:

Direct variation states that:

if, y∝x

then the equation is in the form of:

y=kx

where, k is the constant of variation.

As per the statement:

c=π * d

c=πd

The circumference (C) of a circle is equal to pi times the diameter (d) then

c=π * d

c=πd

Therefore, the direct variation equation represents this situation is,

c=πd