Question

In how many revolutions will a wheep with a diameter of 14cm cover a distence of 121cm

Answer 1

Step-by-step explanation:

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= 2\pi rC=2πr

C= 2\times \frac{22}{7}\times 14C=2×

7

22

×14

C= 88\ cmC=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,

\text{Revolutions} =\frac{\text{Distance}}{\text{Circumference}}Revolutions=

Circumference

Distance

\text{Revolutions} =\frac{2200}{88}Revolutions=

88

2200

\text{Revolutions} =25Revolutions=25

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

Answer 2

Answer:

circumference of wheel=2πr

=2×22/7×7

=44 cm

distance to be covered=121cm

number of revolution=total distance to be travelled/ circumference of wheel

= 121/44

2.75 revolution

Step-by-step explanation:

i hope it helped you out dear