The spoke of a wheel reaches from the center of the wheel to its rim. If the circumference of the rim of the wheel is 42 inches, how long is each spoke?
2007-10-23 04:09:31 · 10 answers · asked by Abigail 2 in Science & Mathematics ➔ Mathematics
C = 2 π r
r = C / (2π )
r = 42 / 6.28 ins
r = 6.69 ins (to 2 dec. places)
2007-10-23 04:24:10 · answer #1 · answered by Como 7 · 0⤊ 0⤋
42/pi/2 try that on calculator
its circumference divided by pi to get diameter
diameter divided by 2 which is the radius or one of the spokes of the wheel.
2007-10-23 04:18:29 · answer #2 · answered by jakash15 2 · 0⤊ 0⤋
The spoke of the eel is the radius
circumference = 2 pi r
2 pi r = 42
r = 42 / 2 pi = 21/ pi
2007-10-23 04:15:21 · answer #3 · answered by norman 7 · 0⤊ 0⤋
Circumference (C)= 2 x pi x radius (r)
Therefore r = C/2 pi
= 42/(2 x 3.141592654)
= 6.7 inches
2007-10-23 04:22:53 · answer #4 · answered by dj_kool_off 2 · 0⤊ 0⤋
the formula for circumference is: C=2(pi)r
look at your given and what you are looking for:
given: circumference = 42 in
need: length of spoke (radius)
so plug in the circumference
42= 2(pi)r
divide both sides by 2(pi) to get the r by itself
42/2(pi)=r
r=6.68 in
2007-10-23 04:17:58 · answer #5 · answered by numbr1TXfan 4 · 0⤊ 0⤋
C=2(pi)(r)
42inches/2(pi)=r
6.68inches
2007-10-23 04:19:46 · answer #6 · answered by kanwal S 1 · 0⤊ 0⤋
Tweedle Dum Tweedle Dee Around the Circle pi times d... but if the area is decleared remember the formula pi(r)^2
2007-10-23 04:18:20 · answer #7 · answered by Anonymous · 0⤊ 0⤋
circumference = 2r(pie)
42=(2)r(3.14)
21=r(3.14)
r= about 6.69
2007-10-23 04:58:01 · answer #8 · answered by mz_temper 1 · 0⤊ 0⤋
C = 2 (pie) (radius)
2007-10-23 04:12:55 · answer #9 · answered by chocolatelvr 4 · 0⤊ 0⤋
R = C/(2pi)
R = 42/6.28 etc..........
2007-10-23 04:15:40 · answer #10 · answered by mathmom 2 · 0⤊ 0⤋