Question

in covering a distance of 11 kilometre the wheel of a cart makes 500 Revolution find the radius of wheel​

Answer 1

Distance covered by one revolution=11000/500.

=22m

Perimeter=22m

Perimeter of the circle=2πr

=2πr=22

=2*22/7*r=22

radius =3.5m

Answer 2

500 revolution=11 km

11 km=11000 m

1 revolution=$\frac{11000}{500}$

=22

MEANS In 1 revolution=22 m

Now If Take 1 revolution take Then It will Total Circumference.

MEANS Circumference=22 m

Circumference=2πr

$2 \times \frac{22}{7} \times r = 22 \\ r = \cancel{22} \times \frac{7}{\cancel{22} \times 2 } \\ r = 3.5 \: m$

Radius=3.5 m