Circumference for ninth grade: Calculate by how much the perimeter has increased

Examples with solutions for Circumference for ninth grade: Calculate by how much the perimeter has increased

Exercise #1

The length of the radius of a circle is given in the diagram below.

Calculate how many times its circumference is greater than the length of its radius.

r=4

Video Solution

Answer

2π 2\pi

Exercise #2

The length of the diameter and the circumference of a circle are given below.

Calculate how many times greater the circumference is than the length of the radius?

101010C=31.4

Video Solution

Answer

6.28

Exercise #3

The measurements of the diameter and circumference of a circle are shown in the figure below.

Calculate how many times greater the circumference is than the length of the radius?

C=37.6812

Video Solution

Answer

6.28

Exercise #4

The diameter of a circle is given in the figure below.

Calculate how many times greater the circumference is than the length of the diameter?

444

Video Solution

Answer

π \pi

Exercise #5

In the circle of the drawing, the radius and the circumference are given. Calculate how many times greater the circumference is than the diameter's length?

333C=18.84

Video Solution

Answer

3.14