Question

guys please help me by solving this problem in step by step. maths class 10th case based question based on real life situation please solve this it's important for me so please​

Answer 1

Diameter of a wheel = 40 cm

Radius of a wheel = 40/2 = 20 cm

Circumference of a circle = 2πr

Circumference of a wheel = 2π(20) = 40π

We know that Distance = Speed × Time

Given speed = 1 km/h

Given time = 10 minutes = 10/60 hour = 1/6 hour

Distance = 1 × 1/6 hour = 1/6 km = 50,000/3 cm

No. of revolutions = Total distance / Distance covered in 1 revolution

No. of revolutions =

$\frac{ \frac{50000}{3} }{40\pi} = \frac{ \frac{50000}{3} }{ \frac{880}{7} } = \frac{4375}{33} = 132.576 \: (approx.)$