In any circle, the ratio of the circumference of a circle to its diameter is the same and is approximately equal to 22/7
| May 2, 2021 | education
In any circle, the ratio of the circumference of a circle to its diameter is the same and is approximately equal to 22/7 a) Determine the length of a circle whose diameter is 3 cm. B) At what diameter is the circumference equal to 10 cm?
A) Find the circumference by making a proportion, expressing the circumference through Q:
Q – 22,
3 cm – 7.
Q = 3 * 22: 7;
Q = 66: 7;
Q = 9.4285 = 9.4 cm – the length of the given circle.
Answer: The circumference is 9.4 centimeters.
B) Find the diameter of the circle, making a proportion, expressing the diameter of the circle through W:
W – 7,
10 cm – 22.
W = 7 * 10:22;
W = 70: 22;
W = 3.1818 = 3.2 cm – the diameter of this circle.
Answer: The diameter of the circle is 3.2 centimeters.
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.
