الدائرة: إيجاد القطر ونصف القطر

The video tutorial explains how to find the diameter and radius of a circle given its circumference. It begins with an introduction to the concepts of diameter and radius, followed by an explanation of the circumference formula. The instructor then demonstrates how to apply the formula to calculate the diameter, using the given circumference value. The video also covers the calculation of the radius by dividing the diameter by two. The tutorial concludes with a brief summary and a call to action for viewers to subscribe.

What is the main objective of the problem introduced in the video?

• To calculate the volume of a sphere

• To find the diameter and radius of a circle

• To determine the length of a rectangle

• To find the area of a circle

Which formula is used to calculate the circumference of a circle?

• πr²

• πd

• d/2

• 2πr

What is the calculated diameter of the circle with a circumference of 106.4 mm?

• 53.2 mm

• 33.87 mm

• 21.2 mm

• 106.4 mm

How is the radius of a circle related to its diameter?

• The radius is the square of the diameter

• The radius is twice the diameter

• The radius is equal to the diameter

• The radius is half the diameter

If the diameter of a circle is 33.87 mm, what is the radius?

• 16.935 mm

• 8.4675 mm

• 33.87 mm

• 67.74 mm