. How many revolutions will a circular wheel of radius r units will make to cover a distance of 100 times its diameter?


A. Area  related
B. 100 π
C. Area  related
D. Area  related

 

Best Answer

Answer  : ||| A

Solution : |||

Given the radius of the wheel is ‘r.’

For one revolution, wheel covers the distance equal to its circumferenece = 2

Given the radius of the wheel is ‘r.’

For one revolution, wheel covers the distance equal to its circumferenece = 2πr

Given in the question that distance covered is 100 times the diameter

Distance covered = 100 × 2r = 200r

Therefore the number of revolutions = Area  related

Area  related

If this wire is bent in the form of circle, then the circumference of the circle is equal to the length of the wire.

⇒ 2πr = 88

Πr = 44

r = Area  related cm

Area of the circle = πr2

= π × Area  related

Area  related

= (1936/22) x 7

= 616 cm2

Talk to Our counsellor