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The circumference of a circle is equal to pi times the diameter. which direct variation equation represents this situation
C=pi *d the second one

Answer:

Option B is correct

\(C = \pi d\)

Step-by-step explanation:

Direct variation states that:

if \(y \propto x\)

then the equation is in the form of:

\(y=kx\) where, k is the constant of variation.

As per the statement:

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

then:

\(C = \pi \times d\)

⇒\(C = \pi d\)

Therefore, the direct variation equation represents this situation is, \(C = \pi d\)

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