Question

Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches.

A. 56 in.
B. 28 in.
C. 88 in.
D. 44 in.

Answer 1

@Nnesha can you please explain this to me

Answer 2

they already gave u the formula so just plugin the value
remember radius is half of diameter
r= d/2

Answer 3

28/2=14

C= 2 PI 14

= 87.96

C. 88

Answer 4

c

Answer 5

\[r=\frac{ d }{ 2}\]
d=diameter
r= radius
so replace d with 28 to find radius

Answer 6

@Nnesha so the answer is A?

Answer 7

The answer is C

Answer 8

how did you get 56 ?

Answer 9

d/2 = what ?
replace d with 28

Answer 10

so decide 28/2? 14

Answer 11

yes right now 2 pi times 14

Answer 12

\[C = 2\pi r\] so substitute for 14
then solve

Answer 13

2 pi x 14?

Answer 14

yes right

Answer 15

oh okay. pi= 3.14 x 2 = 6.28. 6.28 x 14 = 87. 92. ANSWER 88 :D right?

Answer 16

yes right

Answer 17

yes!! thank you :)

Answer 18

jazakallah khair

Answer 19

:=)