Question

The diameter of the wheel of Surjeet's taxi is 42 cm.Find how many complete revolutions must in make to cover 396 metres

Answer 1

HEY Buddy....!! here is ur answer

Given that : Diameter = 42 cm

=> Radius = D/2 = 42/2 = 21 cm = 0.21 m

[ As we know that : 1 m = 100 cm => 1 cm = 1/100m ]

As we know that : Circumference of circle = 2πr

Let, x revolutions make to cover 396 m

According to the question : x × 2πr = 396

=> x × 2×22/7×0.21 = 396

=> x = 300

So, 300 revolutions make to cover 396 m.

I hope it will be helpful for you...!!

THANK YOU ✌️✌️

Answer 2

Step-by-step explanation:

HEY Buddy....!! here is ur answer

Given that : Diameter = 42 cm

=> Radius = D/2 = 42/2 = 21 cm = 0.21 m

[ As we know that : 1 m = 100 cm => 1 cm = 1/100m ]

As we know that : Circumference of circle = 2πr

Let, x revolutions make to cover 396 m

According to the question : x × 2πr = 396

=> x × 2×22/7×0.21 = 396

=> x = 300

So, 300 revolutions make to cover 396 m.

I hope it will be helpful for you...!!