Question

please answer this question

step by step ​

Answer 1

Step-by-step explanation:

Question 4.

i) diameter of bicycle wheel = 1m 26 cm

= 126 cm

Radius = 126/2 = 63

Now,

Distance travelled in one rotation = circumference of bicycle wheel

So,

Distance travelled in one rotation = 2πr

= 2 × 22\7 × 63

= 44 ×9

= 396 cm

= 3 m 96cm

ii) Distance = 1.98 km = 1980 m

So,

Number of rotation = distance /circumference

= 1980/3.96

= 500