Question

A bicycle's wheel of diameter 70 cm makes
a revolution in 1 second. Calculates the
distance it covers in km/hr.and it ans is 7.92please tell me this answer ​

Answer 1

Answer:

31.68

Step-by-step explanation:

We will first calculate the distance covered in given time.

Distance covered = Number of revolutions × Circumference

So, we will be having distance and time, from which we can calculate the speed.

Radius of wheel = 70/2 = 35 cm.

Distance covered in 40 revolutions will be = 40 × Circumference.

That is,

40×2πr=40×2×3.14×35=8800cm=88m.

Distance covered in 1 second = 88/10 = 8.8 m.

Therefore, speed = 8.8 m/s.

That is, 88×

5

18

=31.68km/hr.

Hence, the speed of the motorcycle is 31.68 km/hr

mark brainliest

Answer 2

Answer:

Hope it's helpful for you