use 22/7 for pi
2007-04-24 02:33:07 · 11 answers · asked by d 2 in Science & Mathematics ➔ Mathematics
these are the answers i can choose from
9.42
18.86
28.29
66.7
2007-04-24 02:38:51 · update #1
THIS CONFUSES ME, which one is it????!!
Standard units of measure are broken into the following categories.
units of length
units of area
units of volume and capacity
units of weight
units of time
all of the above
2007-04-24 02:43:07 · update #2
44/7 times 3 would be 132/7
2007-04-24 02:37:20 · answer #1 · answered by Dale D 4 · 0⤊ 0⤋
Pi is approximately 3, so Pi x d = Pi x r x 2 therefore 3 x 3 x 2 = 18, so the answer is 18.86
2007-04-24 02:40:16 · answer #2 · answered by nath67890 1 · 0⤊ 0⤋
C = 2.Ï.r
C= 2 x 22/7 x 3
C = 132/7
C = 18(6/7) = 18.86
2007-04-24 02:44:10 · answer #3 · answered by Como 7 · 0⤊ 0⤋
Circumference of a circle = pi times diameter
C = pi x d
To find the diameter, multiply the radius by 2
d = 2 x r
d = 2 x 3
d = 6
C = pi x 6
C = 3.1429 x 6
C = 18.86 ====> the answer
2007-04-24 02:50:16 · answer #4 · answered by detektibgapo 5 · 0⤊ 0⤋
Circumference of a circle is defined as pi times the diameter fo the circle. In this case, you need to find the diameter, which is simply double the radius, or 6. Then take 6 and multiply it by 3.1415 (or you can use the less accurate 22/7) to get the answer.
2007-04-24 02:38:20 · answer #5 · answered by wxscooter 2 · 0⤊ 0⤋
Circumference = 2 . pi . r ('.' denoted multiplication symbol)
=> C = 2 . (22 / 7) . 3
=> C = 132 / 7
Therefore, Circum is 18.86 (unit unknown)
2007-04-24 02:38:52 · answer #6 · answered by Senthil 3 · 0⤊ 0⤋
circumference = 2*pi*r
= 2*22/7*3
=132/7
2007-04-24 02:38:06 · answer #7 · answered by Yssa A 3 · 0⤊ 0⤋
circumference is defined by pi * D, where D is the diameter. So, witha radius of 3, it would be 6*pi, or 6*22/7, which = 18.857
2007-04-24 02:39:37 · answer #8 · answered by tet169 1 · 0⤊ 0⤋
Circumference = pi x diameter
= 22/7 x (2x3)
= 18.84cm
2007-04-24 02:38:19 · answer #9 · answered by Winter Angel 2 · 0⤊ 0⤋
C=2pir
C 6 pi (and whatever unit)
2007-04-24 02:38:24 · answer #10 · answered by Durai 3 · 0⤊ 0⤋