How do i do this question the rear wheel of emma’s bicycle has a diameter of 65cm. she cycles 3.2km to school each morning. how many complete revolutions will her wheel do during the journey

We know that
circumference=2*pi*r
for r=65/2> r=32.5 cm
circumference=2*pi*32.5> 204.1 cm
so
one revolution of Emma’s bicycle is equal to 204.1 cm> 2.041 m
3.2 km> 3200 m
1 revolution> 2.041 m
x rev> 3200 m
x=3200/2.041 > x=1567.86 revolutions

the answer is
1567 complete revolutions

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