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The diameter of one bicycle wheel is 24 inches, and its spokes run from the hub (or center) to the edge of the rim. The diameter of another bicycle wheel is 21 inches. What is the difference in inches between the length of the spokes of the two wheels?

A 1.5
Explaination
The spoke is equivalent to the radius. which is the\u00A0diameter divided by 2.\u00A0Therefore, the spoke for the 24-inch wheel is 12 inches.\u00A0The spoke for the 21-inch wheel is 10.5 inches. 12 - 10.5 = 1.5-inch difference between the two spokes.
B 3.5
C 2
D 4