Question

the diameter of a wheel is 40 cm how many Revolution will it make on covering 176 m

(a) 140
(b) 150
(c) 160
(d) 166​

Answer 1

Step-by-step explanation:

Diameter of wheel = 40 cm

Radius of wheel = r = 40/2 cm = 20 cm

Distance the wheel travels = 176 m = 17600 cm

In 1 revolution wheel travels 2πr distance

No. of revolutions a wheel makes =distance travelled / 2πr

= 140

Answer 2

Answer :

• 140 revolutions will it make on covering 176m.

Given :

• The diameter of a wheel is 40 cm how many Revolution will it make on covering 176 m

To find :

• Revolutions

Solution :

Given,

• Diameter of wheel is 40cm

We know that

• Radius = Diameter/2
• Radius = 40/2 = 20cm

And also Given,

• Distance travels a wheels 176m = 17600 cm

We know that

• Circumference of wheel = 2πr

↦ Number of revolutions make a wheel = Distance travels a wheel/Circumference of wheel

↦ Distance travels by a wheel / 2πr

↦ 17600/ 2 × 22/7 × 20

↦ 17600 × 7 / 2 × 22 × 20

↦ 123200/880

↦ 140 revolutions

Hence,

140 revolutions will it make on covering 176m.