Math, asked by pg196508, 4 months ago

the diameter of a cycle wheel is 21 cm . how many revolutions will it make in moving a distance of 66 cm ?​

Answers

Answered by Anonymous
4

Answer:

Given, speed of the car = 66 km/h and diameter of wheel = 21 cm

So, radius of wheel (r) = 21/2 = 10.5 cm

As we know, Distance = speed × time

Distance covered by car in 36 sec = 66 × 5/18 × 36 = 660 meter

As we know, circumference of circle = 2πr

Thus, Circumference of wheel = 2 × 22/7 × 21/2 = 66 cm

∴ No of revolutions = distance/(circumference of wheel) = (660 × 100)/66 = 1000

hope this helps you ❤❤⭐

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