The diameter of a cycle wheel is 21 cm. How many revolutions will it m

1.	The diameter of a cycle wheel is 21 cm. How many revolutions will it make to travel1.98 km?5.
Answer» Radius of wheel = 21 cm/2 In one revolution bicycle will cover = 2pir Therefore, 2 × (22/7) × 21/2 cm = 66 cm Total distance = 1.98 km We know, 1 kilometre= 1000,00 centimetres So, 1.98 km = 1.98 × 1000,00 cm So, number of revolution needs = Total distance/ 2pir = 1.98 × 1000,00/66 = 3000 revolutions Hit like and BeScholr

The diameter of a cycle wheel is 21 cm. How many revolutions will it make to travel1.98 km?5.

Answer»

Radius of wheel = 21 cm/2

In one revolution bicycle will cover = 2pir

Therefore, 2 × (22/7) × 21/2 cm = 66 cm

Total distance = 1.98 km

We know,

1 kilometre= 1000,00 centimetres

So,

1.98 km = 1.98 × 1000,00 cm

So, number of revolution needs

= Total distance/ 2pir

= 1.98 × 1000,00/66

= 3000 revolutions

Hit like and BeScholr