Question

help i give medals

Find the exact circumference.

d = 19.7 cm

Answer 1

Plzz help me.... Lol im so sleepy i cant think

Answer 2

Circumference Formula:
\[2 \pi r\]

Answer 3

2 multiplied by Pi multiplied by Radius

Answer 4

Ok.

Answer 5

If Diameter is 19.7 then radius would be it's exact half.

Answer 6

so the answer is 9.85

Answer 7

So
\[19.7 \div 2\]
\[9.85\]
That is the Radius

Now we will put this in the formula:
\[2 \times \pi \times r\]
\[2 \times \pi \times 9.85\]
Now you can solve this easily im sure.

Answer 8

so it 9.85cm or 9.85πcm

Answer 9

d = 19.7 cm
Multiply that number by pi.

Circumference = pi times diameter

That's it.

Answer 10

\[\large C = 2 \pi r\]or\[\large C = \pi D\]where D is diameter

Answer 11

Why do you follow me every where agent)smith

Answer 12

That makes more sense. You can directly multiply the diameter with Pi

Answer 13

Ok so my answer is 9.85cm

Answer 14

I did and i gota 9.85

Answer 15

Multiply the diameter with Pi

Answer 16

\[\large C = \pi \times D\]plug in the D which is 19.7 and you are done.

Answer 17

I got 19.70

Answer 18

so its 19.7 not 19.7π

Answer 19

\[\large C =? \pi\]replace the question mark and you're done.

Answer 20

Put 19.7 in the place of the ?

Answer 21

no my answers are



A.
9.85 cm

B.
19.7 cm

C.
9.85π cm

D.
19.7π cm

Answer 22

Ok listen...

If you have been given the radius then u use this to find circumference:
\[2 \times \pi \times r\]

But you have the diameter 19.7 so simply do this to find circumference:
\[d \times \pi\]

Which means:
\[19.7 \times \pi\]

Answer 23

We've basically given you the answer now...

Answer 24

I know its 19.7π

Answer 25

Yep

Answer 26

Yea thxx i just needed the explanation. thanks guys

Answer 27

r u in k12? did u get it right???????????????/