Question

the diameter of a bicycle wheel is 28 cm .what distance it cover in 100 revolution?

Answer 1

diameter = 28 cm => radius = 14cm
therefore surface area of the wheel
=> 4*22/7*14*14 =>2464cm2
revolutions = 100
therefore the area it covered => 2464*100
=> 246400cm2

Answer 2

find the circumference of wheel 2πr. 2πr=88. the distance is 88×100=8800