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Circumference and the area of a circle with radius 2 m

Circumference and the area of a circle with radius 2 m-example-1
User Tbreffni
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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

Circumference and the area of a circle with radius 2 m-example-1
User Ambrish Dhaka
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