The diameter of a wheel of cycle is 21 cm. It moves slowly along a road. How far will it go in 500 revolutions?
Choose the correct choice
A) 220  B) 330  C) 360  D) 390  E) 410
In revolution, distance that wheel covers = circumference of wheel Diameter of wheel = 21 cm   Therefore, circumference of wheel = πd   = 22/7 × 21   = 66 cm   So, in 1 revolution distance covered = 66 cm   In 500 revolution distance covered = 66 × 500 cm   = 33000 cm   = 33000/100= 
<gadget id="calculator">33000/100</gadget>
<output>330</output>
330 m   ANSWER 330
<result>B</result>
The diameter of a wheel of cycle is 21 cm. It moves slowly along a road. How far will it go in 500 revolutions?