Question

The radius of a cart wheel is 70 cm . How many revolution that does it make in travelling a distance of 132 m

Answer 1

see the attachment pic for the answer..

Answer 2

Hey friend here is your answer.......

Solution :-

Given :

r = 70 cm , Distance travelled = 132 m .

$\small{therefore \: circumference \: of \: a \: cart \: wheel \: = 2\pi r}$

$= 2 \times \frac{22}{7} \times 70$

$= 440 \: cm$

Distance travelled = Number of revolutions X Circumference

$\small{therefore \: number \: of \: revolution \: = \frac{distance \: \: traveled}{circumference} }$

$= \frac{132 \: m}{440 \: cm}$

$= \frac{13200 \: cm}{440 \: cm} \: (1m = 100cm, \: 132m = 13200cm)$

$= 30$

Therefore , Number of revolutions = 30

Hope it helps you.....