Roberts bike tires are 20 inches in diameter.Whats the circumfrence of a 20-inch circle?(Use 3.14 for Pi
2006-12-11 07:42:34 · 10 answers · asked by blake_footballstar 2 in Science & Mathematics ➔ Mathematics
with wat
2006-12-11 07:45:24 · answer #1 · answered by Shorty T 1 · 0⤊ 0⤋
Circumference of a circle: = pi*d
= 3.14 * 20
= 62.8 inches
2006-12-11 15:45:40 · answer #2 · answered by Anonymous · 0⤊ 0⤋
To calculate the circumference of a circle, you use the formula
pi * diameter
So, the circumference of Robert's bike tire is 62.8 inches.
2006-12-11 15:48:12 · answer #3 · answered by Ronald B 2 · 0⤊ 0⤋
The circumference would be diameter * pi. So, 20 times 3.14.
2006-12-11 15:45:33 · answer #4 · answered by Joy M 7 · 0⤊ 0⤋
circumference
=2*Pi*r
or Pi*d
=3.14*20 in
=62.8 in
2006-12-11 15:50:36 · answer #5 · answered by openpsychy 6 · 0⤊ 0⤋
circumference=pi*d
=3.14*20
=62.8 inch
2006-12-11 15:55:38 · answer #6 · answered by raj 7 · 0⤊ 0⤋
Circumference = pi * diameter
C = 3.14 * 20
C = 62.8
2006-12-11 15:47:55 · answer #7 · answered by Peter 2 · 0⤊ 0⤋
do pi times diameter
which is 20*3.14
the answer is 62.8 inches
2006-12-11 15:45:50 · answer #8 · answered by Harnsowl 2 · 0⤊ 0⤋
16.24 mm. get a calculator.
2006-12-11 15:46:48 · answer #9 · answered by mikey g 2 · 0⤊ 0⤋
20Ï=62.8"
2006-12-11 15:46:23 · answer #10 · answered by yupchagee 7 · 0⤊ 1⤋