Question

How many times must a wheel of radius 14 cm rotate to cover a distance of2112 cm ?​

Answer 1

Answer:

25 times

Step-by-step explanation:

Circumference of the wheel = 2πr

= 22/7 × 14 × 2

= 88 cm

Distance = 22 m

= 2200 cm

Revolutions = distance/circumference

=2200/88

= 25 revolutions

Answer 2

To find : How many times will a wheel of radius 14 cm have to rotate to cover a distance of 22 m?

Solution :

A wheel of radius 14 cm

Circumference of the wheel is C= 2πr

$C=2 \times \frac{22}{7} \times 14$

C=88 cm

It cover a distance of 22 m.

Convert into cm,

1 m = 100 cm

22 m=2200 cm

The number of times wheel rotate is given by,

$revolutions = \frac{distance}{circumference}$

$revolutions = \frac{2200}{88}$

REVOLUTIONS=25

Therefore, 25 times will a wheel rotate to cover a distance.