2007-01-13 08:50:00 · 14 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
firstly, convert 8 inches to mm to get 203.2 millimeters.
Originally, the formula for the circumference of a circle is 2 π r.
π being a constant of approx. 3.14. Since we already have the diameter (double the radius), the formula is π x 203.2
which gives a circumference of approx. 638.37 mm.
For more information on finding circumferences go to:
http://www.mathgoodies.com/lessons/vol2/circumference.html
2007-01-13 08:59:16 · answer #1 · answered by Richard C 3 · 0⤊ 0⤋
Circumference is 22/7 X 8 = 25 1/7 inches = 25.14 "
1 inch = 25.4 mm
therefore, circumference is 25.14 X 25.4 inches
which equals 628.556 mm
2007-01-13 11:57:28 · answer #2 · answered by Anonymous · 0⤊ 0⤋
8 inches is approx 200mm
so the circumference is approx 200 times pi mm
approx 200 times 3.142 mm
round the answer to the nearest whole mm for a good answer
2007-01-13 10:38:37 · answer #3 · answered by rosie recipe 7 · 0⤊ 0⤋
Circumference: = 2(22/7)(18/2) = 2(22/7)(9) = 396/7 or fifty six 4/7 answer: fifty six 4/7 inches section: = 22/7(18/2)² = 22/7(9)² = 22/7(eighty one) = a million,782/7 or 254 4/7 answer: 254 4/7 sq. inches
2016-10-19 22:43:32 · answer #4 · answered by Anonymous · 0⤊ 0⤋
638 mm is the answer. 8inches x 25.4= mm
8 x 25.4 x pi
pi == 22/7
8x 25.4 x22/7= 638.628
2007-01-13 09:07:09 · answer #5 · answered by Lawrie 1 · 1⤊ 0⤋
pi X 8 X 25.4= 638.454
2007-01-13 09:03:44 · answer #6 · answered by Anonymous · 0⤊ 0⤋
1" = 2.54cm = 25.4mm
d = 8 x 25.4mm = 203.2mm
C = 3.14 x d = 3.14 x 203.2 mm = 638mm
2007-01-13 21:28:26 · answer #7 · answered by Como 7 · 0⤊ 0⤋
8 x pi x 25.4 = 638.4..mm
2007-01-14 06:50:58 · answer #8 · answered by Anonymous · 0⤊ 0⤋
That one is so simple you should almost be able to do it in your head. 638.37.
2007-01-13 09:00:10 · answer #9 · answered by Gee Wye 6 · 0⤊ 0⤋
638.048 mm
2007-01-13 08:59:24 · answer #10 · answered by XéêèÑãß 4 · 0⤊ 0⤋