Question

the radius of a circular wheel is 42 cm find the distance travelled by it in 1 revolution in 50 revolution and in 200 revolutions​

Answer 1

GIVEN

r = 42cm

Distance travelled by one revolution = circumference of circle

2×22/7×42

=264 cm

Now,

Distance covered in 50 revolution

= 50× 264

=13,200 cm i . e 132 m

Also

Distance covered after 200 revolution

=200×264

= 52,800cm

=528 m

Answer 2

Answer: 1 revolution = 2.64m

50 revolutions = 132m

200 revolutions = 528m

Step-by-step explanation:

Circumference = 2 x $\pi$ x r

Circumference = 2 x $\frac{22}{7}$ x 42

Circumference = 264cm ( 42 is in 7 table so it will be reduced {7=1 ; 42=6})

Circumference = 2.64m ( It is converted from cm to m )

1 revolution = 2.64m

50 revolution = 264 x 50 = 13200cm or 132m

200 revolution = 264 x 200 = 52800cm or 528m