A wheel with a diameter of 14 cm makes 28 revolutions at some distance. What should be the area of the disc of a wheel that makes 56 revolutions at the same distance?
Let’s find the distance that this wheel makes with a revolution of 14 cm, for this it is necessary to multiply the value of the diameter of this wheel by the number of revolutions that this wheel made:
14 * 28 = 392 cm – this is the distance made by a wheel with a diameter of 14 cm;
Let us find the value of the diameter of the wheel, which should cover this distance, having completed 56 revolutions, for this it is necessary to divide this distance by the given number of revolutions:
392: 56 = 7 cm – the value of the wheel diameter to complete the specified number of revolutions at a given distance.
Answer: 7 cm is the value of the wheel diameter in order to complete the specified number of revolutions at a given distance.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.