Question

what is the formula to find the circumference of a circle when the diameter is known??

Answer 1

\(\large\color{black}{ \rm C=\pi d}\)

Answer 2

C is the circumference, d is the diameter.

Answer 3

C=πd

Answer 4

you can use a 3.14 approximation for Pi.

Answer 5

unless, you need an exact value.. whatever your teacher wants...

Answer 6

c=2(3.14)r

Answer 7

i just need to know the formula , and i had chose both of those, and they were wrong..

Answer 8

\(\large\color{black}{ \rm C=\pi d}\) is the correct formula for the circumference (C), in terms of the diameter (d).
For area on the other hand, you would have,

\(\large\color{black}{ \rm A=\frac{\pi}{4}d}\)

Answer 9

I mean d squared for the area... sorry

Answer 10

would that be the same as pi times the radius squared ??