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gabbyalicorn
 one year ago
A wheel has a diameter of 21 inches.
Approximately how far does it travel in 3 revolutions?
A.
63 in.
B.
65.94 in.
C.
98.91 in.
D.
197.82 in.
gabbyalicorn
 one year ago
A wheel has a diameter of 21 inches. Approximately how far does it travel in 3 revolutions? A. 63 in. B. 65.94 in. C. 98.91 in. D. 197.82 in.

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gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0because 21 x 3 = g3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i would think its A as well, but i would like to have it confirmed just to be sure.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Keys: C=Circumference D=Diameter R=Radius 3.14=pi How to find the circumference: D=21 Divide that by 2 = 10.5 The formula for the circumference of a circle is 2×3.14×r Plug in the numbers: 2×3.14×10.5 Which equals 65.94 Then, we have to multiply that by 3. So, 65.94 x 3 = 197.82 Which is our answer.

unknownunknown
 one year ago
Best ResponseYou've already chosen the best response.3So, remember c/d = pi. Rearrange to get c = pi * d One circumference of a circle is equivalent to a full revolution. So we multiply by 3 for 3 revolutions. pi * d * 3 = 197.82, as YoungTrilogy stated.

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.0okay, thank you :) √
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