Find the circumference and area of a circle with a diameter of 5.6 cm.
| June 17, 2021 | education
d = 5.6 cm.
L -?
S -?
The circumference L is determined by the formula: L = 2 * P * r, where п is the number Pi (3.14), r is the radius of the circle.
Since r = d / 2, the formula will take the form: L = 2 * P * d / 2 = P * d.
L = 3.14 * 5.6 = 17.6 cm.
The area of a circle S is determined by the formula: S = п * r ^ 2, where п is the number Pi (3.14), r is the radius of the circle.
Since r = d / 2, the formula will take the form: S = P * (d / 2) ^ 2 = п * d ^ 2/4.
S = 3.14 * (5.6 cm) ^ 2/4 = 24.6 cm ^ 2.
Answer: the circumference is L = 17.6 cm, the area of the circle is S = 24.6 cm ^ 2.
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.
