Question

Circumference and the area of a circle with radius 2 m

Answer 1

Question:

Solution:

Circumference of the circle:

The Circumference C of a circle of radius r is given by the following formula:

`C\text{ = 2}\pi r`

in this case r=2m, then the circumference would be:

`C\text{ = 2}\pi(2)=12.56`

that is, the circumference of the circle is:

`12.56\text{ m}`

Area of the circle:

The area A of a circle of radius r, is given by the following formula:

`A=\pi r^2`

According to the data of the problem, we can conclude that the area of the given circle is:

`A=\pi r^2=\pi(2)^2=4\pi=12.56`

that is, the area of the given circle is:

`12.56m^2`