Question

The diameter of a wheel of cycle is 21 cm. It moves slowly along a road. How far will it go in 50 revolutions?

Answer 1

$\Large{\underline{\underline{\mathfrak{\bf{\red{Solution}}}}}}$.

$\Large{\underline{\mathfrak{\bf{\orange{Given}}}}}$

• Diameter of wheel cycle = 21 cm

$\Large{\underline{\mathfrak{\bf{\orange{Find}}}}}$

• Distance covered by wheel , if he go in 50 revolutions ?

$\Large{\underline{\underline{\mathfrak{\bf{\red{Explanation}}}}}}$.

Here ,

==> Diameter of wheel cycle = 21 cm

So,

==> Radius of wheel cycle be = 21/2 = 10.5 cm

$\large{\underline{\mathfrak{\bf{\orange{Important\:Formula}}}}}$

★ Circumference of wheel = 2πr

So,

==> Circumference of wheel cycle = 2 * 22/7 * 10.5

==> Circumference of wheel cycle = 2 * 22 * 1.5

==> Circumference of wheel cycle = 3 * 22

==> Circumference of wheel cycle = 66 cm

Since,

∵ Wheel cycle rotate in 1 revolution = 66 cm

•°• Wheel cycle total rotate in 50 revolution = 66 *50 = 3300 cm

$\Large{\underline{\mathfrak{\bf{\orange{Hence}}}}}$

• Wheel cycle covered total distance in 50 revolution be = 3300 cm = 33 m

__________________

Answer 2

Answer:

33m is answer of question