Question

A bicycle wheel makes 500 revolutions in moving 1 km. find the diameter of the wheel.

Answer 1

$\textbf{\huge{ANSWER:}}$

Given:

Bicycle makes 500 revolutions in moving 1 Km

1 Km = 100000 cm

Distance covered in 1 revolution = $\frac{100000}{500}$

=》 Distance = 200 cm

Circumference of a circle = Distance covered in 1 revolution

=》 $2 \pi r = 200$

=》 $2 \times \frac{22}{7} r = 200$

=》 $r = \frac{200\times 7}{22 \times 2}$

=》 r = 31.8 cm

Diameter = 2r

=》 D = 2 × 31.8

=》 $\textbf{D = 63.6 cm}$

Hope it Helps!! :)