Answer:
25.136 in
Explanation:
Given data
Adult bicycle wheel
Diameter= 26in
Radius= 26/2= 13in
Circumference= 2πr
Circumference= 2*3.142*13
Circumference= 81.692 in
Child's bicycle
Diameter= 18in
Radius= 18/2= 9in
Circumference= 2πr
Circumference= 2*3.142*9
Circumference= 56.556 in
Hence the difference in the distance traveled in one revolution is the difference in their circumference
Distance= 81.692 -56.556
Distance= 25.136 in