Question

C = 2(pi)r and C = d(pi) are the formulas for finding the _____________ of a circle.

Answer 1

Hello from MrBillDoesMath!

Answer:

Circumference

Discussion:

Circumference of a circle = 2 (pi) r

As d(iameter) = 2 * r this formula is equivalent to

Circumference of a circle = d (pi)

Thank you,

MrB